Perhaps you should try some spelling variations:
va phuong » va thuong, cac phuong
chi danh » chi dan, chi anh, chi dinh
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
luan ban » luan van, luan san, luan han
doi chi » doi khi
va cong » tai cong, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi danh - canh tranh ((va cong) or (va phuong)) ((cong van) OR (song van)) luan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi danh - canh tranh ((va cong) OR (va phuong)) ((cong van) OR (song van)) luan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi danh - canh tranh ((va cong) or (va phuong)) ((cong van) OR (song van)) luan ban*".