Perhaps you should try some spelling variations:
cao thuoc » cay thuoc, cua thuoc, nam thuoc
thanh hai » thanh phan, thanh hoa, thanh san
thanh vai » thanh van, thanh tai, thanh oai
cao thuc » bao thuc, can thuc, cao thu
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
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 v nang x hoi. lieu va ((cao thuc) or (cao thuoc)) va ((thanh vai) OR (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang x hoi. lieu va ((cao thuc) OR (cao thuoc)) va ((thanh vai) OR (thanh hai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang x hoi. lieu va ((cao thuc) or (cao thuoc)) va ((thanh vai) OR (thanh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach v nang x hoi. lieu va ((cao thuc) or (cao thuoc)) va ((thanh vai) OR (thanh hai)) cua tre*.