Perhaps you should try some spelling variations:
cao thuoc » cay thuoc, cua thuoc, nam thuoc
cao thuc » bao thuc, can thuc, cao thu
te sach » toc sach
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
sach 2 » sach y
2 nang » v nang
va cua » va chua, via cua, ca 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: te sach 2 nang x hoi. lieu va ((cao thuc) or (cao thuoc)) va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach 2 nang x hoi. lieu va ((cao thuc) OR (cao thuoc)) va hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach 2 nang x hoi. lieu va ((cao thuc) or (cao thuoc)) va hanh va cua tre*.