This question isn't too clear, but here's my take on the two ways to interpret it.
How to get pages other than your homepage to show up for searches:
- Get incoming links to those specific pages you want to show. Build up their authority and incoming link popularity.
How to get just your homepage to come up for searches:
- Get more incoming links to your homepage with the keywords you want it to show up for.
- Use a meta robots tag or robots.txt to exclude the spiders from indexing the pages.