Perhaps you should try some spelling variations:
sach tham » sach nha
hanh thai » nhanh thai, hinh thai, hanh tai
sach thu » sach thue, sach thieu, cach thuc
thai cua » than cua, tai cuc, tri cua
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach thu) or (sach tham)) nang xa hoi. hieu va cac duc va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach thu) OR (sach tham)) nang xa hoi. hieu va cac duc va hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach thu) or (sach tham)) nang xa hoi. hieu va cac duc va hanh thai cua tre*.