In the results page you posted it looks like you are using AND as the separator. I think you should be using OR to get a more inclusive result set. To check out the searching functionality for these two name fields try either editing the existing page or creating another that does only those two searches. Start with the just the measurer and ensure that that works, when it does add in the other criteria for the hunter. Both of these should be like comparisons and the separator should be OR.
Please give this a try and let us know what you get, also without a login I was unable to test this advanced functionality of the search.