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
va cham » va chat, va tham
thuc va » thuc vat, thuc dan, thuc day
lai cua » dai cua, hai cua, thai cua
x hoi » xa hoi, o hoi, x ho

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 x hoi. lieu va cham ((thuc va) or (tuc xa)) hanh ((lai cua) OR (lai chau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tham nang x hoi. lieu va cham ((thuc va) OR (tuc xa)) hanh ((lai cua) OR (lai chau)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tham nang x hoi. lieu va cham ((thuc va) or (tuc xa)) hanh ((lai cua) OR (lai chau)) tre".
• Adding a wildcard symbol may retrieve word variants: toc sach tham nang x hoi. lieu va cham ((thuc va) or (tuc xa)) hanh ((lai cua) OR (lai chau)) tre*.