Perhaps you should try some spelling variations:
vuong manh » duong manh, luong manh, vuong anh
hung vuong » hoang vuong
hieu manh » chieu xanh, hieu nganh, hien hanh
anh dung » anh dong, anh huong, sach dung
toan cao » toan tap
toan ban » van ban
va hung » va nhung, van hung, va huong

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)) - anh dung va hung vuong manh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - anh dung va hung vuong manh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - anh dung va hung vuong manh ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - anh dung va hung vuong manh ((toan cao) or (toan ban))*.