detailed, in-depth, painstaking | extensive
He has carried out extensive research into renewable energy sources.

basic | original | further | ground-breaking, pioneering
pioneering research into skin disease

collaborative | empirical | academic, clinical, historical, medical, military, scientific, social, space | AIDS, cancer, etc. | animal
calling for a ban on animal research

market

piece
a startling piece of historical research

carry out, conduct, do, undertake
She''s doing research on Czech music between the wars.

be based on
One paper based on research conducted at Oxford suggested that the drug may cause brain damage.

demonstrate sth, indicate sth, prove sth, reveal sth, show sth, suggest sth
What have their researches shown?

produce sth, yield sth
Recent research on deaf children has produced some interesting findings about their speech.

degree | effort, programme, project, work
directing the group''s research effort

methods | findings, results | purposes
Copies of the tape can be made for research purposes.

centre, institute, laboratory | assistant, group, student, team, worker | grant

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

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

an area of research, research and development
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.