Perhaps you should try some spelling variations:
sach tham » sach nha
sach thu » sach thue, sach thieu, cach thuc
thai cua » than cua, tai cuc, dai cua
lang van » dang van, tang van, hoang van
cac tuc » cac toc, cac tu, cac tac
qua cac » cua cac
van hoi » van hoa, van hoc, van hoe
tuc va » thuc va, truc va, tuc xa
va da » va dao, va dau, va dap

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 thu) OR (sach tham)) lang van hoi. hieu qua cac tuc va da ((thai cua) OR (tri cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) OR (sach tham)) lang van hoi. hieu qua cac tuc va da ((thai cua) OR (tri cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach thu) OR (sach tham)) lang van hoi. hieu qua cac tuc va da ((thai cua) OR (tri cua)) tre*.