Perhaps you should try some spelling variations:
quan nhung » qua nhung, cua nhung, luan chung
luan nhung » luan chung, luan hung, luan phuong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tien anh » tien manh, dien anh, tien thanh
anh tang » anh bang, anh dang, anh nang
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 ((tien anh) or (tieng anh)) - anh tang ((luan nhung) or (quan nhung)) cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (tieng anh)) - anh tang ((luan nhung) OR (quan nhung)) cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (tieng anh)) - anh tang ((luan nhung) or (quan nhung)) cong manh toan ban*.