Perhaps you should try some spelling variations:
phong cong » phong chong, thong cong, chong cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh tran » canh tranh, hanh trang, banh trang
van phong » van dong, hai phong
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
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: ho chieu tinh - canh tran van phong cong ((dan than) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh tran van phong cong ((dan than) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh tran van phong cong ((dan than) or (dan chan)) cau*.