Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong san » cong tac
san chan » san chang, dan chan, san chay
chan tu » phan tu, han tu, chon tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((thanh trung) OR (hanh chinh)) ((cua hang) OR (cua dang)) cong san chan tu~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((thanh trung) or (hanh chinh)) ((cua hang) or (cua dang)) cong san chan tu*.