Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hanh tram » hanh tam, hanh trang, thanh tra
dung cong » dung trong
tan thanh » tran thanh, tang thanh, toan thanh
thanh tap » thanh lap, thanh tai, thanh tay
cong tan » cong tac, cong san, cong thanh
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: ((theo tieu) or (doi chi)) sach - ((hanh tram) OR (thanh tran)) xay dung cong tan thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (doi chi)) sach - ((hanh tram) OR (thanh tran)) xay dung cong tan thanh tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (doi chi)) sach - ((hanh tram) OR (thanh tran)) xay dung cong tan thanh tap".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (doi chi)) sach - ((hanh tram) OR (thanh tran)) xay dung cong tan thanh tap*.