Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van nang » van quang, van ban, van dong
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
dieu cuu » dieu cua, dinh cuu, dien cuc
va nang » da nang, cam nang, kha nang
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cuu tre » cua 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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ((van nang) or (va nang)) x hoi. lieu va cac nuoc ((va danh) or (va hanh)) dieu cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((van nang) OR (va nang)) x hoi. lieu va cac nuoc ((va danh) OR (va hanh)) dieu cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ((van nang) or (va nang)) x hoi. lieu va cac nuoc ((va danh) or (va hanh)) dieu cuu tre*.