Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cao thuc » cao thuoc, bao thuc, can thuc
van hanh » ban hanh, van anh, van ban
te sach » toc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
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: te sach y ((nang xa) OR (nang ma)) hoi. lieu va cao thuc ((van hanh) or (van thanh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang ma)) hoi. lieu va cao thuc ((van hanh) OR (van thanh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) OR (nang ma)) hoi. lieu va cao thuc ((van hanh) or (van thanh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) OR (nang ma)) hoi. lieu va cao thuc ((van hanh) or (van thanh)) dai cua tre*.