Perhaps you should try some spelling variations:
doc sach » toc sach, nuoc sach, dac sac
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat xuc » chat huu, cam xuc, chao xu
van hanh » van thanh, ban hanh, van anh
co sach » bo sach, cuon sach
tu nang » tru nang, tu nong, tu nano
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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: ((doc sach) or (((co sach) or (hoc sach)))) tu nang x hoi. hieu van chat xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (((co sach) OR (hoc sach)))) tu nang x hoi. hieu van chat xuc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (((co sach) or (hoc sach)))) tu nang x hoi. hieu van chat xuc van hanh vi cua tre*.