Perhaps you should try some spelling variations:
cham hoc » cham soc, chat hoc, cham hoi
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
ty nang » ky nang, ty hang, ly nang
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
danh du » danh dau, danh tu, dinh du
du cau » cu cau, da cau, di cau

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 ((ty nang) OR (ty xang)) xa hoi. lieu va cham hoc va danh du cau tren~.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty xang)) xa hoi. lieu va cham hoc va danh du cau tren*.