Perhaps you should try some spelling variations:
thanh cham » thanh pham, thanh cha, hanh cham
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
dong cong » duong cong, dung cong, dang cong
tran van » luan van
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhiet dong)) - hanh tran van dong cong san ((thanh cham) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhiet dong)) - hanh tran van dong cong san ((thanh cham) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhiet dong)) - hanh tran van dong cong san ((thanh cham) or (toan cao))*.