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 » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan lap
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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 hang) or (va lang)) cong dan ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh hang ((va hang) OR (va lang)) cong dan ((phan cau) OR (phan tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh hang ((va hang) or (va lang)) cong dan ((phan cau) OR (phan tu))*".