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 tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao

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