Perhaps you should try some spelling variations:
sach duoc » sach nuoc, sach dao, sach dung
hieu viec » nhieu viec, sieu viet, hieu tiem
hieu hien » bieu hien, dieu hien, chieu chien
danh doi » danh di, thanh doi, dung doi
vu sach » vu bach, su sach, vu khach
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
duoc va » nuoc va, duc va, duoc ma
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma

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

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