Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh ha » thanh hoa, nhanh ha, thanh phan
so sach » so sanh, bo sach, co sach
xuc gia » duc gia, luc gia, tuc gia
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai
ha hoi » hoa hoi, ha noi, xa hoi

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