Perhaps you should try some spelling variations:
thanh trung » thanh tung
chan dung » dan dung
doc hieu » toc thieu, hoc thieu
van dung » van dong, xay dung, tin dung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » 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: ((doc hieu) or (hoc hien)) xanh - thanh trung ((chan dung) or (van dung)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) xanh - thanh trung ((chan dung) OR (van dung)) cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) xanh - thanh trung ((chan dung) or (van dung)) cong san toan cau*.