Perhaps you should try some spelling variations:
sang tao » hang tai
toc sach » hoc sach, doc sach, thuoc sach
hanh va » hang va
hieu ve » hieu va, hieu van
tao hoi » tao khoi, tao boi, tay hoi
ty sang » ty xang, ty hang, duy sang
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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: ((te sach) OR (toc sach)) ty sang tao hoi. hieu ve cam xuc va ((hanh va) OR (hanh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty sang tao hoi. hieu ve cam xuc va ((hanh va) or (hanh vi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty sang tao hoi. hieu ve cam xuc va ((hanh va) or (hanh vi)) cua tre*.