Question

we all know that like charges attact each other but how does the same charges attract each other best explanation required

Answer 1

Sorry, but your statement is wrong
Same charges repel each other while opposite charges attract each other☺

Answer 2

Likely charged bodies can also attract each other
What you have to do is to take a strongly charged body and a conducting ball which is slightly charged with by same polarity as taken earlier and place them near to each other,.
For simplicity, let both be + charged

Now, due to influence of strong charge, strong - charge will be induced at that area which is close to strong field on that conducting ball and + charge will flow off to opposite side
The induced charge will be the reason for this attraction