Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hoc hieu » hoc thieu, hoc hien, hoc dieu
doc hieu » toc thieu, hoc thieu, hoc hien
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
tam ban » tai ban, tao ban, tay 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) or (doc hieu)) manh - manh trung tam ban cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (doc hieu)) manh - manh trung tam ban cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (doc hieu)) manh - manh trung tam ban cong dan toan ban*.