Same phrases but one ending in . or comma

[fmkone]

Hello,
Its a wonderful script. I love it. There is slightly a problem or customization i would like.

For example, i have two strings:
String 1= "This script works just fine."
String 2= " i would love to use this script."

Problem 1: It should give "this script" phrase or words in '=' or equality. But due to full stop or '.' in the end it treats them different phrases. How can i fix this in script or maybe a new version?

Problem 2: It gives case sensitive results, Is it possible i get case insensitivity as well?

Thanks again.