Perhaps you should try some spelling variations:
nhung tri » nhung bai, dung tri, nhung bi
biet quan » viet quan, bien quang, viet quang
trong san » trong cac, dong san, trong ca
nhung gi » nhung bi, nhung bai
cong san » cong tac
que van » quy van, quyet van, quan van
qua van » quan van, qua ban, qua san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nhung tri) or (nhung gi)) ((que van) or (qua van)). biet quan ((trong san) OR (cong san)) thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhung tri) OR (nhung gi)) ((que van) OR (qua van)). biet quan ((trong san) OR (cong san)) thanh.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhung tri) or (nhung gi)) ((que van) or (qua van)). biet quan ((trong san) OR (cong san)) thanh".
• Adding a wildcard symbol may retrieve word variants: ((nhung tri) or (nhung gi)) ((que van) or (qua van)). biet quan ((trong san) OR (cong san)) thanh*.