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
trung cua » truong cua, trung tuan, trung cap
cua nong » cua cong, cuu nong, cua dong
cong tac » cong ty
khan cap » khan ap, than cap, khoan cam

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 cua nong ((cong san) or (cong tac)) ((phan tu) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cua nong ((cong san) OR (cong tac)) ((phan tu) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cua nong ((cong san) or (cong tac)) ((phan tu) or (khan cap))*.