Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
va phuong » va thuong, cac phuong
san thanh » ban thanh, van thanh, son thanh
thanh mau » hanh mau, thanh san, thanh hai
cong san » cong tac

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) or (thanh cong)) va phuong cong san thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh tung) OR (thanh cong)) va phuong cong san thanh mau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh tung) or (thanh cong)) va phuong cong san thanh mau*.