Perhaps you should try some spelling variations:
hanh tran » hanh trang, thanh tran, hanh tram
cong vang » cong lang, cong quang, cong ngang
theo chu » theo chieu, cho chu, chao chu
tran van » luan van
van dung » van dong, xay dung, tin dung
cong san » cong tac
toan tap » toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (theo chu)) xanh - hanh tran van dung ((cong vang) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (theo chu)) xanh - hanh tran van dung ((cong vang) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (theo chu)) xanh - hanh tran van dung ((cong vang) or (cong san)) toan tap*.