Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
va dinh » van dinh, va kinh, va tinh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau
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: su sach ty ((lang xa) or (nang ma)) hoi. hieu qua cham xuc ((va dan) or (va dinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (nang ma)) hoi. hieu qua cham xuc ((va dan) OR (va dinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((lang xa) or (nang ma)) hoi. hieu qua cham xuc ((va dan) or (va dinh)) vi cua tre*.