Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
van thanh » ban thanh, van tuan
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
doi cua » dai cua, hoi cua
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
nang co » nang doc, nang noi, nang hoc
ve cam » ve cac, va cam, ve cai

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: so sach ky ((nang co) OR (nang cao)) hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang co) or (nang cao)) hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((nang co) or (nang cao)) hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh doi cua tre*.