didn't see Fabs post, maybe some this will help as well (edit)
check out the dictionaries on Fab's website IDNs.ws for a great list of dictionaries.
make sure you get the correct grammitical form of the word (ie russian).
make sure you get the most popular form of the word. for example go to
www.mdbg.net for chinese names take "hotel" you get many definitions, use google, trends, and other tools to decide which is the best. For this particular term I think there is a discussion about it over at IDNF.
for "investment" 投资 its a little more clear cut, except there is a simplified Chinese(used mostly on the mainland) version and a traditional version (Tiawain mainly). the simplified is blocked since the traditional one is registered.
Good luck, as Fab said reg at dynadot get an appraisal from a native and most of all have fun IDNing.
tee1