Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
sach ty » sach y, sach tu, sach thu
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
thuc va » thuc dan, thuc day
danh ma » anh ma, danh ca, hanh ma
ty danh » ty doanh, ty anh, ky danh
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 ty danh ma hoa. lieu va cao ((thuc va) or (thuc vat)) ((hanh tai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty danh ma hoa. lieu va cao ((thuc va) OR (thuc vat)) ((hanh tai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty danh ma hoa. lieu va cao ((thuc va) or (thuc vat)) ((hanh tai) or (hanh va)) cua tre*.