After seeing the tweak by Liam Deacon for increasing the maximum search results in Kazaa, I decided to try it for Morpheus. It works, but the value must be added manually. All you need to do is:
1. Run regedit.
2. Goto: HKEY_CURRENT_USER/Software/Morpheus/Advanced
3. Create DWORD value "MaxSearchResult"
4. To enter the data, double-click on the new value, switch to decimal input, and enter the number of results you want. I set mine to 400 per Liam's suggestion.
Now you will get a lot more search results than the program's "maximum" of 100. Thanks to Liam for the original tweak.