Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
cao thong » cao thuong, tao thong, cao phong
tung cao » nung cao, truong cao, trung cap
cong dan » cong san, cong tan, huong dan
thai cao » tai cao, thoai cac, thuat cao
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 tung cao thong cong dan ((thai cao) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung cao thong cong dan ((thai cao) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cao thong cong dan ((thai cao) or (toan cao))*.