How to solve or improve Search functionality in Magento

Many of you might have faced problem with searching in Magento based website. Although Magento has improved it in recent versions.
Here I will just point 2 issues with Magento search functionality and their solution.

NOTE: In admin panel at Catalog - Manage Products - Product Name - General location you must set Visibility as Search or Catalog,Search . Otherwise product will not be visible in search results.

Issue 1: Search results are returning 0 results even though products are available in catalog.
Solution: This issue come due to incorrect indexes. Please apply below steps to get rid of this.
In admin panel go to System - Index Management. There Select All and re index all data.
In admin panel go to System - Cache Management. There Select All and refresh all data.

After this you will be able to see search results on your Magento based website.

Issue 2: How to enhance search results?
Solution:  To enhance results you have do small change in admin panel.
In admin panel go to System - configuration - Catalog - Catalog Search and then change Search Type to Combine (Like and Full text)

I hope above solution will solve your problem. In case you have any other problem feel free to ask me.