Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong san, cong ty
than cao » toan cao, thai cao, than cap
tung va » trung va, tuong va, dung va

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 tung va thong ((cong tan) OR (cong thanh)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung va thong ((cong tan) OR (cong thanh)) than cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung va thong ((cong tan) OR (cong thanh)) than cao*.