Perhaps you should try some spelling variations:
hiem duoc » nghiem duoc, nhiem cuoc, bien duoc
hieu duoc » hieu thuoc, hieu luc, bien duoc
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve ve » de ve, va ve, ke 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 sach v nang xa hoi. ((hieu duoc) OR (hiem duoc)) chat xuc ((van ban) or (ban hanh)) ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang xa hoi. ((hieu duoc) OR (hiem duoc)) chat xuc ((van ban) OR (ban hanh)) ve ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang xa hoi. ((hieu duoc) OR (hiem duoc)) chat xuc ((van ban) or (ban hanh)) ve ve triet".
• Adding a wildcard symbol may retrieve word variants: su sach v nang xa hoi. ((hieu duoc) OR (hiem duoc)) chat xuc ((van ban) or (ban hanh)) ve ve triet*.