Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
ky sang » ky nang, ky dang, ky tang
sang xa » song xa, lang xa, sang ma
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
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: ((vu sach) or (thuoc sach)) ky sang xa hoi. lieu va cam xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thuoc sach)) ky sang xa hoi. lieu va cam xuc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thuoc sach)) ky sang xa hoi. lieu va cam xuc van hanh vi cua tre*.