First word not get search with whitespace analyzer

Hi,
I am using the analyzer as

"post" : { "type" : "string", "store" : "yes", "index" :
"analyzed","analyzer":"whitespace", "boost" : 3.0 },

I indexed the following text in the post field: "Learn the latest
about new and updated mobile products"

While searching the Text "Learn" from the post field I am not getting
the results. but I can get the results while searching all other
words.

How can I rectify this?

Thanks!

Cheers!

George