Perhaps you should try some spelling variations:
tran hoang » quan hoang, tran quang, tranh hang
nhung thoi » nhung thi, phung thi, nhung loi
thoi quan » thoi quen, thi quan, thong quan
tran hong » tran trong, tranh hang
quan van » luan van, quan va, quan luan
tan than » tan thanh, tan tran, tam than
ban than » ban thanh, van thanh, 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 thoi quan van. biet ((tran hong) or (tran hoang)) ((tan than) OR (ban than))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhung thoi quan van. biet ((tran hong) OR (tran hoang)) ((tan than) OR (ban than)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhung thoi quan van. biet ((tran hong) or (tran hoang)) ((tan than) OR (ban than))".
• Adding a wildcard symbol may retrieve word variants: nhung thoi quan van. biet ((tran hong) or (tran hoang)) ((tan than) OR (ban than))*.