Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
theo chu » theo chieu, cho chu, theo yeu
chao chu » cho chu, cua chu, cao cho
tranh va » tranh van, trang va, trinh va
san luan » dan luan, tang luan, hang luan
luan ban » luan van, luan san, luan han

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (chao chu)) sang - canh tranh va ((nhung cong) or (hang cong)) san luan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (chao chu)) sang - canh tranh va ((nhung cong) OR (hang cong)) san luan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (chao chu)) sang - canh tranh va ((nhung cong) or (hang cong)) san luan ban*.