Search part of word

[u2u4u]

hi.
I want to search some part of text. for example in the "applegood" I want to search "ppleg" return result.
but in NATURAL_LANGUAGE mode it returns no result; so in BOOLEAN mode i use * ppleg * and no result returned. but in "apple*" results returned.
so can i have search like this in NATURAL_LANGUAGE? and if not how can use "*" operator in first of query?