Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
hieu toc » hieu hoc, hieu tuc, sieu toc
cham xuc » cam xuc, chat xuc, pham duc
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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 ty nang xa hoi. hieu toc ((cham xuc) or (cham soc)) ((van hanh) OR (ban hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu toc ((cham xuc) OR (cham soc)) ((van hanh) OR (ban hanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu toc ((cham xuc) or (cham soc)) ((van hanh) OR (ban hanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu toc ((cham xuc) or (cham soc)) ((van hanh) OR (ban hanh)) vai cua tre*.