Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
dieu cua » dieu tra
van nang » van quang, van ban, van dong
va nang » da nang, cam nang, kha nang
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
o hoi » co hoi, o hoc, o hai

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)) o hoi. lieu va cac luc ((va danh) or (va hanh)) dieu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((van nang) OR (va nang)) o hoi. lieu va cac luc ((va danh) OR (va hanh)) dieu cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ((van nang) or (va nang)) o hoi. lieu va cac luc ((va danh) or (va hanh)) dieu cua tre*.