Perhaps you should try some spelling variations:
nhien viet » nhin viet, nghiep viet, trien viet
bach tuoc » sach duoc, sach nuoc
danh hoi » danh hoa, dan hoi, danh hoc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
tuoc va » thuoc va, nuoc va, duoc va
va danh » va dinh, va dan, va hanh
hoi cua » hoi chuc
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: su sach ky nang xa hoi. ((nhien viet) or (hieu ve)) bach tuoc va danh hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. ((nhien viet) OR (hieu ve)) bach tuoc va danh hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((nhien viet) or (hieu ve)) bach tuoc va danh hoi cua tre*.