Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
chat xuc » chat huu, cam xuc, chao xu
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
lam va » nam va, dam va, lam ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. ((hieu van) or (lieu va)) chat xuc ((van hanh) OR (ban hanh)) lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. ((hieu van) OR (lieu va)) chat xuc ((van hanh) OR (ban hanh)) lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. ((hieu van) or (lieu va)) chat xuc ((van hanh) OR (ban hanh)) lam va triet".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. ((hieu van) or (lieu va)) chat xuc ((van hanh) OR (ban hanh)) lam va triet*.