Perhaps you should try some spelling variations:
sach tham » sach nha
tham lang » nham nang, pham hang, thai bang
toc sach » hoc sach, doc sach, thuoc sach
lang toc » lang ngoc, dan toc, lang son
toc hoc » toan hoc, duoc hoc
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
minh vi » minh voi, dinh vi, minh va
cua cay » cua cac
ve cac » va cac, vien cac
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tham lang toc hoc. hieu ve cac ((thuc va) OR (duc tan)) minh vi cua cay~.
• Adding a wildcard symbol may retrieve word variants: toc sach tham lang toc hoc. hieu ve cac ((thuc va) or (duc tan)) minh vi cua cay*.