Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
hieu cao » chieu cao, hieu cac, hieu ca
chat xuc » chat huu, cam xuc, chao xu
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, dua tren
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 cao chat xuc van hanh di ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thuat sach)) ky nang x hoi. hieu cao chat xuc van hanh di ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thuat sach)) ky nang x hoi. hieu cao chat xuc van hanh di ((cua tre) OR (cua triet))*.