Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
manh luan » manh tuan, manh quan, doanh luan
minh luan » minh tuan, binh luan, trinh luan
hoc hieu » hoc thieu, hoc hien, doc hieu
hieu cac » hieu luc, hieu va, hieu van
trang va » hang va
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu cac - hanh ((trang va) OR (tran van)) nhung duong ((manh luan) or (minh luan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cac - hanh ((trang va) OR (tran van)) nhung duong ((manh luan) OR (minh luan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cac - hanh ((trang va) OR (tran van)) nhung duong ((manh luan) or (minh luan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cac - hanh ((trang va) OR (tran van)) nhung duong ((manh luan) or (minh luan)) ban*.