Namebio removed the date ranges from their search. They got swift feedback over this and finally, the date ranges are back on the site.
You may check the article here:
http://namebio.com/blog/you-asked-we-listened-date-ranges-are-back/
You may check the article here:
http://namebio.com/blog/you-asked-we-listened-date-ranges-are-back/