Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
van dung » van dong, xay dung, tin dung
cong san » cong tac
nang cau » nang cao, hang cau, nang dau
va dung » va duong, vat dung, va ung
tang ca » tang cua, hang ca, tang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung ((va dung) or (van dung)) cong san ((nang cau) or (tang ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((va dung) OR (van dung)) cong san ((nang cau) OR (tang ca)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung ((va dung) or (van dung)) cong san ((nang cau) or (tang ca))*.