Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
cap thuong » chap thuong, ca thuong, cao thuong
trung cap » truong cao, trung tam
doc hieu » toc thieu, hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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