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, le trong, ke trong
he trung » le trung, he thong, do trung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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 (he trung)) cong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh trung ((he trong) OR (he trung)) cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung ((he trong) OR (he trung)) cong dan than ban*.