Perhaps you should try some spelling variations:
nhung luong » hung luong, nhung huong, nhung tuong
thieu sach » chieu sach, thien hach, hieu cach
tranh van » trinh van, thanh van, tranh ban
luong thi » luong tai
tran van » luan van
thi toan » thi tran, thi hoan, thi loan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chinh sach)) - canh ((tranh van) OR (tran van)) nhung luong thi toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chinh sach)) - canh ((tranh van) OR (tran van)) nhung luong thi toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (chinh sach)) - canh ((tranh van) OR (tran van)) nhung luong thi toan ban*".