Perhaps you should try some spelling variations:
nhung thoi » phung thi, nhung loi, nhung tri
nhung thi » phung thi, nhung tri, nhung chi
vien quan » van quan, tin quan
trong ban » trong san, trong tan, trong quan
quan van » luan van, quan va, quan luan
ban than » ban thanh, van thanh, ban hang
lien » bien, tien, dien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nhung thoi) or (nhung thi)) quan van. ((vien quan) or (lien quan)) trong ban than~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhung thoi) OR (nhung thi)) quan van. ((vien quan) OR (lien quan)) trong ban than.
• Adding a wildcard symbol may retrieve word variants: ((nhung thoi) or (nhung thi)) quan van. ((vien quan) or (lien quan)) trong ban than*.