Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
su sach » vu sach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
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: ((su sach) OR (so sach)) ty nang xa hoi. ((hieu ve) or (hieu va)) chat xuc van hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. ((hieu ve) OR (hieu va)) chat xuc van hanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. ((hieu ve) or (hieu va)) chat xuc van hanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty nang xa hoi. ((hieu ve) or (hieu va)) chat xuc van hanh lam va triet*.