Perhaps you should try some spelling variations:
ban banh » ban hanh, ban anh, ban danh
hieu van » hieu va, thien van, lieu va
cham xuc » chat xuc, cham soc, pham duc
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
banh di » danh di, xanh di, banh chi
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
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: tu sach ky nang x hoi. hieu van ((cham xuc) OR (cam xuc)) ban banh di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van ((cham xuc) OR (cam xuc)) ban banh di ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu van ((cham xuc) OR (cam xuc)) ban banh di ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van ((cham xuc) OR (cam xuc)) ban banh di ((cua tre) or (cuu tre))*.