Perhaps you should try some spelling variations:
hieu viec » nhieu viec, sieu viet, hieu hien
sach nuoc » sach duoc, cac nuoc, bach tuoc
danh dai » danh dau, danh di, danh sai
bach ky » bac ky
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky ((nang xa) or (lang xa)) hoi. ((hieu viec) or (hieu ve)) sach nuoc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky ((nang xa) OR (lang xa)) hoi. ((hieu viec) OR (hieu ve)) sach nuoc va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu bach ky ((nang xa) or (lang xa)) hoi. ((hieu viec) or (hieu ve)) sach nuoc va danh dai cua tre*.