Perhaps you should try some spelling variations:
tran trong » gian trong, quan trong, tran hong
nhung thoi » phung thi, nhung loi, nhung tri
nhung thi » phung thi, nhung tri, nhung chi
biet tran » bien tran, viet tran, viet trang
cac tuan » cac thanh, cac thuat, cac tuong
quan va » quan ha, luan va, quan cua
quan ve » quan he, quan viet, quan den
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 thoi)) ((((quan va) OR (quan ve))) or (quan vi)). biet tran trong cac tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhung thi) OR (nhung thoi)) ((((quan va) OR (quan ve))) OR (quan vi)). biet tran trong cac tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhung thi) or (nhung thoi)) ((((quan va) OR (quan ve))) or (quan vi)). biet tran trong cac tuan".
• Adding a wildcard symbol may retrieve word variants: ((nhung thi) or (nhung thoi)) ((((quan va) OR (quan ve))) or (quan vi)). biet tran trong cac tuan*.