Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
pha nhung » phai nhuong, tham nhung, phan chung
ha nhung » hoa nhung, hay nhung, va nhung
cong san » cong tac
phan cau » phan dau, phan cac, phan lap

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: theo chiet tach - thanh trung ((ha nhung) OR (pha nhung)) cong san ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chiet tach - thanh trung ((ha nhung) or (pha nhung)) cong san ((phan cau) OR (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - thanh trung ((ha nhung) or (pha nhung)) cong san ((phan cau) OR (phan tu))*.