Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » manh cua
doanh cua » doanh luan
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
cong hoa » dong hoa, dong hoc, hang hoa
phan cau » phan dau, phan cac, phan tu

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