Perhaps you should try some spelling variations:
tham hoc » thai hoc, tham hoa, than hoc
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
ty nang » ky nang, ty hang, ly nang
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
di cau » da cau, diem 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 tham hoc va danh di cau tren~.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty xang)) xa hoi. lieu va tham hoc va danh di cau tren*.