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
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac
va dang » van dang, va nang, va 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 dang cong dan ((than cao) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh hang va dang cong dan ((than cao) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh hang va dang cong dan ((than cao) or (than cap))*.