Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
cham xuc » chat xuc, cham soc, pham duc
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, dua tren
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa

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: te sach ky sang ma hoi. hieu ve ((cham xuc) OR (cam xuc)) ban hanh vi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ma hoi. hieu ve ((cham xuc) or (cam xuc)) ban hanh vi ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ma hoi. hieu ve ((cham xuc) or (cam xuc)) ban hanh vi ((cua tre) OR (cua triet))*.