Perhaps you should try some spelling variations:
tran trong » gian trong, quan trong
nhung thi » nhung thoi, phung thi, nhung tri
nhung loi » nhung bai, nhung bi, nhung gi
tran hong » tran hoang, tranh hang
cac tuan » cac thanh, cac thuat, cac tuong
quan va » quan ha, luan va, quan ve
quan vi » quan li, quan tri, quan doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nhung thi) or (nhung loi)) ((quan va) OR (quan vi)). biet ((tran trong) or (tran hong)) cac tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhung thi) OR (nhung loi)) ((quan va) OR (quan vi)). biet ((tran trong) OR (tran hong)) cac tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhung thi) or (nhung loi)) ((quan va) OR (quan vi)). biet ((tran trong) or (tran hong)) cac tuan".
• Adding a wildcard symbol may retrieve word variants: ((nhung thi) or (nhung loi)) ((quan va) OR (quan vi)). biet ((tran trong) or (tran hong)) cac tuan*.