Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
ky dang » ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
don vai » don vi, don va, den vai
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
va don » va dong, va doc, va do

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ky dang) or (ky nang)) xay hoi. hieu ve cham xuc va don vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky dang) OR (ky nang)) xay hoi. hieu ve cham xuc va don vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky dang) or (ky nang)) xay hoi. hieu ve cham xuc va don vai cua tre*.