Perhaps you should try some spelling variations:
so sach » bo sach, co sach, hoc sach
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
van hai » van ha, van chat, van hanh
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ty nang xa hoi. hieu ((van cac) OR (van hai)) thuc va danh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ty nang xa hoi. hieu ((van cac) or (van hai)) thuc va danh va cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ty nang xa hoi. hieu ((van cac) or (van hai)) thuc va danh va cua tre*.