Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
phuong cong » phong cong, phung cong, phuong hoang
hoc chieu » hoc thieu, ho chieu, hoc dieu
tranh cac » trinh cac, thanh cac, tranh cai
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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) OR (hoc hien)) xanh - canh tranh cac ((phuong cong) or (phuong dong)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) xanh - canh tranh cac ((phuong cong) OR (phuong dong)) dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) xanh - canh tranh cac ((phuong cong) or (phuong dong)) dan than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc hien)) xanh - canh tranh cac ((phuong cong) or (phuong dong)) dan than cap*.