Data Compression :Compress a Compressed File Suppose we have file A that has been compressed by the the method B and the output-file is C, now if I am not wrong We can not compress C more by method B, but there might another method=algorithm D that  might compress C more and produce compressed file E.

Is this kind method of using more than one compression-method in each iteration of compression   standard? if there is a paper/survey paper on performance of such kind of compression,  please, comment or post an answer.

I mean, is there any study where 2 or 3 methods were apply to same file,   if there is a paper/survey paper on performance of such kind of compression, please, comment or post an answer.
The essential problem is that most files are NOT compressible (see the counting argument). And an already compressed file is much less likely to be compressible.