Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
sach duoc » sach nuoc, sach dao, sach dung
hieu van » hieu va, thien van, lieu va
danh doi » danh di, thanh doi, dung doi
nang xa » nang x, lang xa, nang ma
duoc va » nuoc va, duc va, duoc ma
va danh » va dinh, va dan, va hanh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

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