Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
doc hieu » toc thieu, hoc hien
cach ban » cac ban, cach bao, cach ben
cong van » cong vang, song van, cong tan
cong san » cong tac
toan ban » van ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) xanh - cach ban cua nhung ((cong van) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) xanh - cach ban cua nhung ((cong van) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) xanh - cach ban cua nhung ((cong van) or (cong san)) toan ban*.