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 thu
nhung chi » chung chi, nhung chu, nhung chien
biet tran » bien tran, viet tran, viet trang
cac tuan » cac thanh, cac thuat, cac tuong
luan va » luan van, luat va
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 chi))) or (nhung thoi)) ((luan va) 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 chi))) OR (nhung thoi)) ((luan va) 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 chi))) or (nhung thoi)) ((luan va) or (quan vi)). biet tran trong cac tuan".
• Adding a wildcard symbol may retrieve word variants: ((((nhung thi) OR (nhung chi))) or (nhung thoi)) ((luan va) or (quan vi)). biet tran trong cac tuan*.