Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
sach thu » sach thue, sach thieu, sach tham
dau cua » dai cua, day cua, cau cua
va dinh » van dinh, va kinh, va tinh
va cham » va chat, va tham
sach ty » sach y, sach tu, xach tay
hieu va » lieu va, hieu qua
cao hoc » co hoc, cho hoc, chat hoc
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) OR (sach thu)) nang cao hoc. hieu va cham xuc ((va dinh) or (va dan)) dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang cao hoc. hieu va cham xuc ((va dinh) OR (va dan)) dau cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) nang cao hoc. hieu va cham xuc ((va dinh) or (va dan)) dau cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) nang cao hoc. hieu va cham xuc ((va dinh) or (va dan)) dau cua tre*.