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
tuan duong » tuyen duong, tuong duong
van duong » van dong, van dung, van phong
cong tan » cong tac, cong san, cong thanh
tan nang » van nang, tin nang, ban nang

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 ((tuan duong) or (van duong)) cong tan nang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((tuan duong) OR (van duong)) cong tan nang cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung ((tuan duong) or (van duong)) cong tan nang cao*.