Perhaps you should try some spelling variations:
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
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
ve cho » ve co, ve che, de cho
cho xu » chao xu, choi xu, cho xa
va cua » va chua, via cua, ca cua

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. hieu ve cho xu ((va dinh) or (van dich)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ve cho xu ((va dinh) OR (van dich)) va cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ve cho xu ((va dinh) or (van dich)) va cua tre*.