Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, hien hanh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
dang van » hoang van, hang va
tran van » luan 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 (dieu hanh)) - hanh trang cua nhung cong ((dang van) or (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh trang cua nhung cong ((dang van) OR (tran van)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - hanh trang cua nhung cong ((dang van) or (tran van)) ban*.