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
chan dung » van dung, dan dung
cap dung » ap dung, cao dung, cach dung
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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