Perhaps you should try some spelling variations:
dang hanh » dang thanh, dang van, dang hung
hieu hoa » tieu hoa, dieu hoa, hiep hoa
ban hanh » ban hang
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ha » hieu va, hieu ca, hieu xa
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. ((hieu ha) or (hieu hoa)) am thuc ((dang hanh) OR (ban hanh)) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. ((hieu ha) OR (hieu hoa)) am thuc ((dang hanh) OR (ban hanh)) vi ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. ((hieu ha) or (hieu hoa)) am thuc ((dang hanh) OR (ban hanh)) vi ve triet*".