Perhaps you should try some spelling variations:
sach ky » sac ky, sach kem, sach hay
sach ty » sach tu, sach thu, xach tay
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((((sach ky) OR (sach ty))) OR (sach y)) nang x hoi. hieu va cam xuc va hanh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((((sach ky) OR (sach ty))) or (sach y)) nang x hoi. hieu va cam xuc va hanh va cua tre~".
• Adding a wildcard symbol may retrieve word variants: thuat ((((sach ky) OR (sach ty))) or (sach y)) nang x hoi. hieu va cam xuc va hanh va cua tre*.