Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
dua ban » dia ban, cua ban, qua ban
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
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: te sach ky nang x hoi. lieu va cham ((dua ban) OR (cuc ban)) anh d ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. lieu va cham ((dua ban) or (cuc ban)) anh d ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. lieu va cham ((dua ban) or (cuc ban)) anh d ((cua tre) OR (cuu tre))*.