Perhaps you should try some spelling variations:
thanh tung » thanh cong
dung cong » dung trong
chao chu » cho chu, cua chu, cao cho
chu sach » cau sach, thu sach, chieu sach
tac dung » sach dung, xay dung, tin dung
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu sach - ((thanh trung) or (thanh tung)) tac dung cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu sach - ((thanh trung) OR (thanh tung)) tac dung cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: chao chu sach - ((thanh trung) or (thanh tung)) tac dung cong tan than cau*.