Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan tap » toan ban
cong va » dong va, cong ha, luong va
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - thanh cong va dung ((((cong dan) or (cong dong))) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh cong va dung ((((cong dan) OR (cong dong))) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh cong va dung ((((cong dan) or (cong dong))) or (cong tac)) toan tap*.