Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong anh » cong danh, dong anh, cong thanh
hong anh » hoang anh, hong hanh, dong anh
tuan ban » tuan bang, toan ban, luan 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 hieu lang - canh tranh cua nhung ((cong anh) or (hong anh)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - canh tranh cua nhung ((cong anh) OR (hong anh)) tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - canh tranh cua nhung ((cong anh) or (hong anh)) tuan ban*.