Can you program a Word Parser script?

[estibot.com]

If so, please PM me. I need a word parser that will take a domain name as input and output the keywords within.

For instance:

INPUT:
domainindustryprofessional.com

OUTPUT:
domain industry professional

I have already coded a rudimentary parser - you can see it in action at EstiBot.com, but I am not satisfied with its performance for two reasons:
1) it is unable to parse more than two words, and it is very limited, does not recognize geo locations etc....iow, it misses a lot
2) it is slow and resource intensive

Therefore I need a fast word parser that is not resource intensive, and is versatile and can parse up to 3 words, preferably 4.

Can you do one better? Please PM me with a quote.

Thanks!
Esa