Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh hang » thanh hang, hang hang, hanh han
cong dan » huong dan, cong dong, cong tac
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan ban » van ban
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 - hanh hang va dung ((((cong dan) OR (cong san))) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh hang va dung ((((cong dan) OR (cong san))) OR (cong tan)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh hang va dung ((((cong dan) OR (cong san))) or (cong tan)) toan ban*".