Further is used with these nouns as the object:
agenda, aim, career, cause, end, interest, understanding

Further is used with these nouns:
allegation, appeal, assault, assurance, bloodshed, clarification, complication, confirmation, consideration, controversy, copy, delay, dimension, discussion, education, embarrassment, encouragement, enquiry, erosion, escalation, evidence, examination, excitement, expansion, expenditure, experiment, explanation, exploration, extension, fall, finance, guidance, humiliation, impetus, implication, improvement, incident, information, insight, instruction, integration, interrogation, investment, legislation, modification, outbreak, payment, possibility, progress, proof, qualification, reading, reassurance, recommendation, reduction, redundancy, reference, refinement, reflection, reform, relaxation, reminder, report, requirement, research, restriction, round, safeguard, simplification, speculation, step, study, surgery, talk, treatment, twist, unrest, verification

Further is used with these verbs:
aggravate, clarify, complicate, confuse, curtail, decline, delay, demonstrate, deteriorate, discuss, drop, elaborate, enhance, enquire, erode, exaggerate, examine, expand, exploit, explore, facilitate, hamper, heighten, intensify, investigate, press, probe, proceed, progress, pursue, recede, reduce, refine, reinforce, restrict, retreat, rise, shrink, stimulate, strengthen, underline, undermine, venture, wander, weaken