Perhaps you should try some spelling variations:
hieu toc » hieu hoc, hieu tuc, sieu toc
toc cham » toc thai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu toc cham ((xuc van) or (duc van)) hanh di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu toc cham ((xuc van) OR (duc van)) hanh di ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu toc cham ((xuc van) or (duc van)) hanh di ((cua tre) or (cuu tre))*.