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 hai » trung ha, trung dai, trong hai
dung cong » dung trong
hai dung » hai duong, mai dung, hai dang
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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 hai dung cong tan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung hai dung cong tan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung hai dung cong tan ((toan ban) or (toan tap))*.