The cells that say 'Invalid Input' in your Find Contacts column are returning that because the information in the 'Company URL' column for those rows is not a link -- ex. row 33 says 'Margo' rather than having a company link
In terms of the 10 profiles, our data providers have their own set limits for the quantity of data that can be returned from their searches. If you have a target individual in mind, you could try adding a row for them manually or "overwriting" the cell -- I know that's not the ideal solution but hopefully you're able to get some good contacts from the 10!