Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va hanh » van hanh, va thanh, va danh
sach ly » sach y, sach lo, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
ve cac » vien cac
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: thu sach ly ((nang xa) OR (lang xa)) hoi. hieu ((ve cac) or (va cac)) xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly ((nang xa) OR (lang xa)) hoi. hieu ((ve cac) OR (va cac)) xuc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ly ((nang xa) OR (lang xa)) hoi. hieu ((ve cac) or (va cac)) xuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ly ((nang xa) OR (lang xa)) hoi. hieu ((ve cac) or (va cac)) xuc va hanh vi cua tre*.