how to force sharepoint server 2013 to search part of a word

I am working on SharePoint server 2013. and currently if i want to search for the pages that contain words such as

"email configuration"

then i need to type the whole 2 words.

But if i type something such as

"email conf"

then i will NOT get any pages that have the words "email configuration" , so is there a way to modify this behavior ?

Thanks