Perhaps you should try some spelling variations:
thanh trung » thanh tung
doi chieu » doc hieu, doi chi, ho chieu
trung vat » trung va, trung van, trong vat
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
vat dung » van dung, va dung, viet dung
cong san » cong tac
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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: ((ho chiet) OR (doi chieu)) tach - thanh trung vat dung cong san ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) or (doi chieu)) tach - thanh trung vat dung cong san ((than cau) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (doi chieu)) tach - thanh trung vat dung cong san ((than cau) OR (than cap))*.