Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
phuong cong » phong cong, phung cong, phuong hoang
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh van » tran van, trinh van, thanh van
tac toan » tap toan, tam toan, hach toan
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: hoc chieu sach - canh tranh van ((phuong cong) or (phuong dong)) tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh tranh van ((phuong cong) OR (phuong dong)) tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh tranh van ((phuong cong) or (phuong dong)) tac toan ban*.