Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
phuong cong » phong cong, phung cong, phuong hoang
chieu xanh » chieu sach, chieu sang, chieu tinh
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 xanh - canh tranh van ((phuong cong) OR (phuong dong)) tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh tranh van ((phuong cong) OR (phuong dong)) tac toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh tranh van ((phuong cong) OR (phuong dong)) tac toan ban*.