Serial com between arduino mega 2560 and atmega 328p(arduimu v3)

Is there any way I can deal with the data handling?

yesthereisyoucan'treadthiseasilybecauseIhavenotputinthecuesthattellyouwherewordsbeginandend.
But if you slip in some simple whitespace and punctuation, things are a lot easier.
Computers don't read junk either.