Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach tu, sach thu, xach tay
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
vang xa » lang xa, mang xa, ang xa
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
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: tu ((sach ty) OR (sach y)) vang xa hoi. hieu ((va cam) or (va cao)) xuc va thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) vang xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) vang xa hoi. hieu ((va cam) or (va cao)) xuc va thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) vang xa hoi. hieu ((va cam) or (va cao)) xuc va thanh van cua tre*.