Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
thu sach » tu sach, thuat sach, thuoc sach
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
ly quang » le quang, vu quang
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
dan cua » dan ca, ban cua, dai cua
cua tre » cua te, cuu tre, cua triet
ve nam » he nam, va nam, le nam
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: thu sach ((ly hang) or (ly quang)) x hoi. hieu ve nam thuc va thanh dan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly hang) OR (ly quang)) x hoi. hieu ve nam thuc va thanh dan cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly hang) or (ly quang)) x hoi. hieu ve nam thuc va thanh dan cua tre*.