search (esp. in criminal investigations), investigation, inquiry...

investigation, examination, inquiry...

inspection (e.g. customs, factory), examination...

police officer, policeman, constable

inspection (for compliance), investigation (tax, etc.)

judging, inspection, examination...

inspection, audit, judgement...

inspection, audit, judgement...

visa, endorsing (e.g. a passport), stamping

assessment (of value, damages, etc.)...

probe, inquiry, enquiry...

auditor, inspector

chief examiner or investigator

fact-finding investigation, investigation into actual conditions, fact-finding survey

examination, consideration, test...

close investigation, careful examination, scrutiny

scan, scanning

inquiry, enquiry, hearing

(national) census

(police) investigator

reexamination, reinvestigation, resurvey

market research

blood test, hemanalysis

attitude survey, opinion poll

Board of Audit

inspection, examination

peer review, refereeing

checking and receiving (an invoice, goods, etc.)...

aptitude test

national review, national referendum on the appointment or re-appointment of Supreme Court judges, held at the same time as general elections to the House of Representatives