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
va danh » va dan, va hanh, dia danh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
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 danh) 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 danh) OR (va dinh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((lang xa) or (nang ma)) hoi. hieu qua cham xuc ((va danh) 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 danh) OR (va dinh)) vi cua tre*.