Perhaps you should try some spelling variations:
thu nghiem » thuc nghiem
thi nghiem » thuc nghiem
nghiem de » nghiem do, nghiem te, nghiem ve
thi hanh » thi thanh
hanh thu » khanh thu, nhanh thu, thanh thu
hanh thi » nhanh thi, hanh thoi, anh thi
nghiem d » nghiem do, nghiem _, nghiem h
tu hanh » du hanh, lu hanh, thuc hanh
de hoc » te hoc, du hoc, dien hoc
d hoc » du hoc, ad hoc, y hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( thi hanh thu nghiem de hoc ) or ( tu hanh thi nghiem d hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thi hanh thu nghiem de hoc ) OR ( tu hanh thi nghiem d hoc )).
• Adding a wildcard symbol may retrieve word variants: (( thi hanh thu nghiem de hoc ) or ( tu hanh thi nghiem d hoc ))*.