Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
ban cong » bang cong, van cong, phan cong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh ((trung thanh) or (tran quang)) ban cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung thanh) OR (tran quang)) ban cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung thanh) or (tran quang)) ban cong tan than cau*.