Perhaps you should try some spelling variations:
quan trong » gian trong
nhung chu » nhung cau, nhung phu, hung chu
biet quan » viet quan, bien quang, viet quang
trong san » trong cac, cong san, dong san
san thanh » ban thanh, van thanh, son thanh
quan va » quan vi, quan ha, luan va
phung » phuong, chung, phong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((phung thi) or (nhung chu)) ((quyet van) or (quan va)). biet quan trong san thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((phung thi) OR (nhung chu)) ((quyet van) OR (quan va)). biet quan trong san thanh.
• Adding a wildcard symbol may retrieve word variants: ((phung thi) or (nhung chu)) ((quyet van) or (quan va)). biet quan trong san thanh*.