Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
cua tre » cua te, cuu tre, cua triet
hieu ca » hieu cac, hieu cua, hieu xa
hanh di » hanh vi, hanh de, hang di
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thuat sach)) ky nang x hoi. ((hieu ca) OR (hieu va)) chat xuc van hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thuat sach)) ky nang x hoi. ((hieu ca) OR (hieu va)) chat xuc van hanh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thuat sach)) ky nang x hoi. ((hieu ca) OR (hieu va)) chat xuc van hanh di cua tre*.