Perhaps you should try some spelling variations:
manh truong » manh trung, manh tuong, anh truong
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
cong san » cong tac
san van » tan van, luan van, tran van

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) or (chinh sach)) - manh truong cua nhung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chinh sach)) - manh truong cua nhung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chinh sach)) - manh truong cua nhung cong san van ban*.