Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
van nhung » van nhuong, va nhung, van hung
manh hung » anh huong
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - canh tranh ((van nhung) or (((van dong) or (manh hung)))) cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh ((van nhung) OR (((van dong) OR (manh hung)))) cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - canh tranh ((van nhung) or (((van dong) or (manh hung)))) cong dan chan cau*.