Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
tuong quan » truong quan, thong quan, luong quan
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
doi hieu » doi chieu, doc hieu, hoi hieu
doi hien » doi dien, doi bien, doi kien
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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: ((doi hieu) OR (doi hien)) lang - thanh tuong quan dung cong tan ((toan cao) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi hieu) OR (doi hien)) lang - thanh tuong quan dung cong tan ((toan cao) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ((doi hieu) OR (doi hien)) lang - thanh tuong quan dung cong tan ((toan cao) or (van ban))*.