Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu nganh » vien nganh, hieu manh, nghiep nganh
hiem ngan » viem gan
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
kim ngan » kim ngoc
tran van » luan van
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (((hiem ngan) OR (kim ngan)))) - hanh tran van nhung cong van than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (((hiem ngan) OR (kim ngan)))) - hanh tran van nhung cong van than cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (((hiem ngan) OR (kim ngan)))) - hanh tran van nhung cong van than cao*.