Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
ve tai » te tai, de tai, le tai
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang x hoi. hieu ((ve tai) OR (va cac)) thuc van hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang x hoi. hieu ((ve tai) or (va cac)) thuc van hanh vi cua tre*.