Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
ve cho » ve che, de cho, ke cho
va cua » va chua, via cua, ca cua
ve co » vo co, va co, de co

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

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