Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
doi chieu » doc hieu, doi chi, mot chieu
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, mot chieu
tranh va » tranh van, trang va, trinh va
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (ho chieu)) tinh - canh tranh va phuong cong ((dan than) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) tinh - canh tranh va phuong cong ((dan than) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) tinh - canh tranh va phuong cong ((dan than) or (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) tinh - canh tranh va phuong cong ((dan than) or (dan chan)) cau*.