Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
dung phuong » dung thuong, bang phuong, dung chung
theo chieu » ho chieu, theo chu, thi chieu
thanh hang » thanh hoang, thanh thang, tranh hang
chang luan » hang luan, chung luan, tang luan
hang dung » hoang dung, dang dung, hang cung
san chang » ban hang, dan chan, van khang
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: ((theo chieu) or (theo tieu)) sach - thanh hang dung phuong cong san chang luan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh hang dung phuong cong san chang luan.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - thanh hang dung phuong cong san chang luan*.