Perhaps you should try some spelling variations:
sang tao » hang tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
cua tre » cua te, cuu tre, cua triet
tao ho » tao hoi, tao cho, tao hoa
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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) or (su sach)) ky sang tao ho. hieu ve cac toc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky sang tao ho. hieu ve cac toc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky sang tao ho. hieu ve cac toc van hanh vi cua tre*.