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

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