Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tran » trung tuan, trung thanh, hung tran
doi chieu » doc hieu, doi chi, ho chieu
hung cong » nhung cong, hung cuong, phung cong
thanh lap » thanh san, phan lap, thanh hai
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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 tran) OR (trung tam)) hung cong tan ((toan cau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung tran) OR (trung tam)) hung cong tan ((toan cau) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung tran) OR (trung tam)) hung cong tan ((toan cau) or (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung tran) OR (trung tam)) hung cong tan ((toan cau) or (thanh lap))*.