Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
lang ha » long ha
mang xa » lang xa, mang may, dang xay
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: tu sach y ((((mang xa) or (lang ha))) or (nang ma)) hoi. hieu vu cham xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((((mang xa) OR (lang ha))) OR (nang ma)) hoi. hieu vu cham xuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((((mang xa) or (lang ha))) or (nang ma)) hoi. hieu vu cham xuc va hanh vi cua tre*.