Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung can » trung cap, trung van, trong can
hoc hieu » hoc thieu, hoc hien, doc hieu
can bang » cao bang, can ban, van ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan tap
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh trung can bang ((cong dan) or (cong san)) ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh trung can bang ((cong dan) OR (cong san)) ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh trung can bang ((cong dan) or (cong san)) ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh trung can bang ((cong dan) or (cong san)) ((toan cao) OR (toan ban))*.