Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dau tren » dau tien, dat tren, dau tieng
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
va cham » va chat, va tham
vu cham » vu kham, tu cham, qua cham
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
xuc va » duc va, tuc va, luc va
ve dau » va dau, ve du, ke dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang co hoc. hieu ((va cham) or (vu cham)) xuc va hanh ve dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang co hoc. hieu ((va cham) OR (vu cham)) xuc va hanh ve dau tren.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang co hoc. hieu ((va cham) or (vu cham)) xuc va hanh ve dau tren*.