Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh hang » thanh hoang, thanh thang, tranh hang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, von tai
toan cao » toan tap
toan ban » van ban

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 hang va thong cong tan ((((toan tai) or (toan cao))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh hang va thong cong tan ((((toan tai) OR (toan cao))) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh hang va thong cong tan ((((toan tai) or (toan cao))) or (toan ban))*.