Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
va chinh » tai chinh, te chinh
so sach » so sanh, bo sach, co sach
va hinh » va kinh, va tinh, va sinh
sach ty » sach y, sach tu, sach thu
van bac » van bao, van hac, dan bac
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
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: so sach ty nang xa hoi. hieu ((van bac) or (van ban)) xuc ((va hinh) OR (va chinh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ((van bac) OR (van ban)) xuc ((va hinh) OR (va chinh)) thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu ((van bac) or (van ban)) xuc ((va hinh) OR (va chinh)) thai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu ((van bac) or (van ban)) xuc ((va hinh) OR (va chinh)) thai cua tre*.