careful, detailed, in-depth, meticulous, painstaking, rigorous, thorough
considerable, exhaustive, extensive
He has carried out extensive research into renewable energy sources.

basic
applied
original
latest, new, recent
current, present
existing
further
ongoing
future
earlier, past, previous, prior
cutting-edge, groundbreaking, innovative, pioneering
pioneering research into skin disease

collaborative
empirical, experimental
laboratory
Internet, online
academic, scholarly (esp. AmE)
graduate, undergraduate, university
clinical, educational, historical, medical, military, scientific, social, space
AIDS, cancer, etc.
animal
Extremists called for a ban on animal research.

market
field
For his PhD he conducted field research in Indonesia.

piece
a startling piece of historical research

carry out, conduct, do, perform, pursue, undertake
She's doing research on Czech music.

produce, provide
present, publish
be based on
One paper based on research conducted at Oxford suggested that the drug may cause brain damage.

fund, sponsor, support
direct, lead, oversee
continue
need, require
Further research is needed.

encourage, promote, stimulate
cite
discuss
review

demonstrate sth, find sth, identify sth, indicate sth, reveal sth, show sth, suggest sth, support sth
research which identifies the causes of depression
What has their research shown?
The research does not support these conclusions.

demonstrate that …, find that …, indicate that …, reveal that …, show that …, suggest that …
Research demonstrates that women are more likely than men to provide social support to others.

link sth to sth, link sth with sth
the research done in the 1950s that linked smoking with cancer

confirm sth, prove sth
produce sth, yield sth
Recent research on deaf children has produced some interesting findings.

examine sth, explore sth, focus on sth, investigate sth
involve sth
be part of sth

degree
effort, programme/program, project, study, work
Who is directing the group's research effort?

agenda
methodology, methods
tool
findings, results
purposes
Copies of the tape can be made for research purposes.

centre/center, facility, lab (informal), laboratory, station, unit
company, firm, institute, institution, organization, university
analyst, assistant, associate, director, fellow, scientist, student, worker
group, team
funding, grant
paper, report
data
interests
question
subject, topic
library
budget

research in
Most research in the field has concentrated on the effects on children.

research into, research on
They are carrying out research into the natural flow patterns of water.

an area of research
focus your research on sth
He focused his research on the economics of the interwar era.

sb's own research
They lack the resources to do their own research.

research and development (abbreviated to R & D)
spending on military research and development

carefully, exhaustively, extensively, fully, meticulously, properly, thoroughly, well
poorly
The book has been poorly researched.

for
She is currently researching for her next novel.

into
I spent two years carefully researching into his background.

Research is used with these nouns as the object:
article, biography, topic