Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
he trong » he thong, he trung, le trong
le trung » do trung
cong dan » cong san, cong tan, cong dong
than ban » thanh ban, toan ban, than man

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 - thanh trung ((he trong) or (le trung)) ((cong dan) or (huong dan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung ((he trong) OR (le trung)) ((cong dan) OR (huong dan)) than ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung ((he trong) or (le trung)) ((cong dan) or (huong dan)) than ban*.