Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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