Perhaps you should try some spelling variations:
thanh tung » thanh cong
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
duc duong » duc cuong, duc dung, duc dong
tung duc » tung duy, trung duoc, duong duc
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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: ((mot chieu) OR (hoc thieu)) tinh - thanh tung duc duong ((cong tan) OR (cong san)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) tinh - thanh tung duc duong ((cong tan) OR (cong san)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) tinh - thanh tung duc duong ((cong tan) OR (cong san)) toan cao*.