research, investigation

1. Detective: - I have carried out a short research on him (e.g. illegal transactions). I didn't find anything culpable.
2. Student: - I am working on an interesting research on nano-technology
3. Policeman: - The investigation for the detection of the serial killer will continue.
4. Financial Adviser: - We should carry out a short research, to examine the prospects of investing in Belarus.
5. Friend to Friend: - I must begin now my research for the next summer holiday destination.

Please I want just nouns!

1. расследование
2. исследование/изучение
3. расследование/дело
4. исследование
5. ? (я не понял смысла. то ли изучение, то ли исследование.)

Quote:

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Originally Posted by Alex80

5. ? (я не понял смысла. то ли изучение, то ли исследование.)

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She is looking for a new destination (e.g. Greece, Egypt, Cyprus etc) for her holidays.
She must get into the Internet and start looking photos, hotel offers etc.

Well, let's say "исследование".

In short:
"Расследование" is for "investigation", about criminal or special cases. For example: aircraft crash is subject for "расследование".
"Исследование" (originally - exploring of landscape) is for "research" in scientific or professional way.
"Изучение" - has shift to "studying/learning" meaning.

In case of 5 it is a little bit strange for me to use these nouns for such activity. Sounds a little bit as comic exaggeration. I think something like "мне надо начать выяснять куда лучше поехать на летние каникулы" is more natural. Note, that "выяснение" as noun will be strange also.