Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
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 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 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 vi cua tre*.