Perhaps you should try some spelling variations:
nhung thoi » phung thi, nhung loi, nhung tri
tran trong » gian trong, quan trong, tran hong
nhung thi » phung thi, nhung tri, nhung chi
luan vang » luan van, luan nang, luan tang
bien tran » bien tram, bien trong, hien trang
trong ban » trong san, trong tan, trong quan
ban thanh » ban hanh, ban hang

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)) luan vang. bien tran trong ban thanh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhung thi) OR (nhung thoi)) luan vang. bien tran trong ban thanh".
• Adding a wildcard symbol may retrieve word variants: ((nhung thi) OR (nhung thoi)) luan vang. bien tran trong ban thanh*.