Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
thanh tra » thanh toan, thanh hoa
tra thanh » tran thanh, ta thanh, thai thanh
dung dung » ung dung, dung ung, dung dong
dung giao » nang giao
thong cap » thong cac, trung cap, thong cua
toc sach » hoc sach, doc sach, thuoc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((toc sach) or (chieu sach)) - thanh tra thanh dung dung giao thong cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((toc sach) OR (chieu sach)) - thanh tra thanh dung dung giao thong cap.
• Adding a wildcard symbol may retrieve word variants: toc ((toc sach) or (chieu sach)) - thanh tra thanh dung dung giao thong cap*.