Perhaps you should try some spelling variations:
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
danh vi » dinh vi, danh di, danh va
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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