Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » manh cua
doanh cua » doanh luan
cong sang » cong lang, cong vang, cong bang
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
ban cau » bang cau, ban can, van cau

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 xanh - canh ((tranh cua) or (doanh cua)) dung ((cong san) or (cong sang)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh ((tranh cua) OR (doanh cua)) dung ((cong san) OR (cong sang)) ban cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh ((tranh cua) or (doanh cua)) dung ((cong san) or (cong sang)) ban cau*.