Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoang van » hang va
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong thanh
duong va » duong van, dung va, luong va
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 hieu lang - hanh tranh cua nhung ((cong tan) or (((hoang van) or (duong va)))) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh tranh cua nhung ((cong tan) OR (((hoang van) OR (duong va)))) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - hanh tranh cua nhung ((cong tan) or (((hoang van) or (duong va)))) toan ban*.