Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thai cua » than cua, tai cuc, tri cua
te sach » toc sach
cac duc » cac du, cao duc, cac dac
hai cua » dai cua, hoi cua, lai cua
duc ban » duc tan, duc van, dua ban
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
me hoi » le hoi
ve cac » va cac, vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((me hoi) or (ma hoa)). hieu ve cac duc ban thanh ((hai cua) OR (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((me hoi) OR (ma hoa)). hieu ve cac duc ban thanh ((hai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((me hoi) or (ma hoa)). hieu ve cac duc ban thanh ((hai cua) OR (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((me hoi) or (ma hoa)). hieu ve cac duc ban thanh ((hai cua) OR (thai cua)) tre*.