Perhaps you should try some spelling variations:
nhung thoi » nhung thi, phung thi, nhung loi
quan trong » gian trong
nhung tri » nhung bai, dung tri, nhung bi
biet quan » viet quan, bien quang, viet quang
quan doi » quan tri, quan li
cac tuan » cac thanh, cac thuat, cac tuong
quan vi » quan li, quan tri

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 thoi)) ((luan van) or (((quan vi) OR (quan doi)))). biet quan trong cac tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhung tri) OR (nhung thoi)) ((luan van) OR (((quan vi) OR (quan doi)))). biet quan trong cac tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhung tri) or (nhung thoi)) ((luan van) or (((quan vi) OR (quan doi)))). biet quan trong cac tuan".
• Adding a wildcard symbol may retrieve word variants: ((nhung tri) or (nhung thoi)) ((luan van) or (((quan vi) OR (quan doi)))). biet quan trong cac tuan*.