Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
phan cua » nhan cua, than cua, phat cua
va thanh » gia thanh, ban thanh, le thanh
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
va cam » va cham, va cao, va cai

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 ly nang xa hoi. hieu ((va cam) or (va cac)) tuc ((va thanh) OR (va tinh)) phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ly nang xa hoi. hieu ((va cam) OR (va cac)) tuc ((va thanh) OR (va tinh)) phan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ly nang xa hoi. hieu ((va cam) or (va cac)) tuc ((va thanh) OR (va tinh)) phan cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ly nang xa hoi. hieu ((va cam) or (va cac)) tuc ((va thanh) OR (va tinh)) phan cua tre*.