Perhaps you should try some spelling variations:
tran trong » gian trong, quan trong, tran hong
nhung thoi » phung thi, nhung loi, hung khoi
nhung thi » phung thi, nhung chi, nhung thu
nhung tri » nhung bai, dung tri, nhung bi
biet tran » bien tran, viet tran, viet trang
cac tuan » cac thanh, cac thuat, cac tuong

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