This seems like more than one question.
find-name-dired
will create a results buffer listing all the files with matching filenames. Use C-h m to see dired-mode's help, and all its key-bindings. RET will open the file at point, o will open the file at point in another window, and C-o will do the same, but leaves you in the Find window (which is convenient if you want to quickly visit several of those files).
findr-search
(which is what it sounds like you're using) appears to work more like a tags mechanism. C-h f findr-search
RET says that you can navigate to the next match with M-,. This will cycle through the matches in the current file, and then on to the next file as necessary.