Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cap » truong cao
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 - hanh ((trung cap) OR (trung tam)) thuong cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((trung cap) OR (trung tam)) thuong cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((trung cap) OR (trung tam)) thuong cong dan than cau*.