Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va cao » va co, va dao, va bao

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 tham nang xa hoi. hieu ((va cao) OR (va cac)) truc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tham nang xa hoi. hieu ((va cao) OR (va cac)) truc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach tham nang xa hoi. hieu ((va cao) OR (va cac)) truc va hanh vai cua tre*.