Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
theo hieu » theo chieu, theo tieu, thien hieu
tuan dung » tuan duong, tan dung, tuan dang
tran dung » tran dang, tran hung, tran quang
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
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: theo hieu qua - thanh tran ((tuan dung) or (tran dung)) cong tan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu qua - thanh tran ((tuan dung) OR (tran dung)) cong tan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu qua - thanh tran ((tuan dung) or (tran dung)) cong tan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo hieu qua - thanh tran ((tuan dung) or (tran dung)) cong tan ((toan cau) OR (toan cao))*.