Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung quan » truong quan, trong quan, trung tuan
quan trong » gian trong
thanh chau » thanh cha, thanh cham, thanh chu
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) tinh - thanh trung quan trong cong san ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - thanh trung quan trong cong san ((thanh chau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) tinh - thanh trung quan trong cong san ((thanh chau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) tinh - thanh trung quan trong cong san ((thanh chau) or (phan cau))*.