Perhaps you should try some spelling variations:
nhung thoi » nhung thi, nhung loi, nhung tri
tran trong » gian trong, quan trong, tran hong
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
phung » phuong, chung, phong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((phung thi) 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: ((phung thi) OR (nhung thoi)) ((luan va) OR (quan vi)). biet tran trong cac tuan.
• Adding a wildcard symbol may retrieve word variants: ((phung thi) or (nhung thoi)) ((luan va) or (quan vi)). biet tran trong cac tuan*.