Perhaps you should try some spelling variations:
thanh phung » thanh phuong, thanh hung, khanh phung
phong cong » phong chong, thong cong, chong cong
cho chieu » ho chieu, theo chieu, chon chien
can chien » van chien, cac chien, tran chien
van phong » van dong, hai phong
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cho chieu) or (can chien)) sach - thanh phung van phong cong tan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cho chieu) OR (can chien)) sach - thanh phung van phong cong tan phan tu.
• Adding a wildcard symbol may retrieve word variants: ((cho chieu) or (can chien)) sach - thanh phung van phong cong tan phan tu*.