Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
may tich » may tinh, mat tich, mach tich
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
xuc may » xuc hay, truc may, phuc may
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
va cua » va chua, via cua, ca cua
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: ((toc sach) or (so sach)) ky nang x hoi. hieu ve cam xuc may tich va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (so sach)) ky nang x hoi. hieu ve cam xuc may tich va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (so sach)) ky nang x hoi. hieu ve cam xuc may tich va cua tre*.