Say I've got an article with "Test" and "Article" in the tags. If I search for "Test", it will come up with the article in the search results. If I search for "Article", it will come up with the article in the search results. But if I search for "Test Article" or "Test, Article" it says "No posts found." and just wont find it. My question, how can I make the search results display articles if you search for more than one tag?
You have to explode your search query by delimiter " " or "," etc and then search every element of the exploding result array. Do you know the search function of Wordpress?
This is something new which i have heard from you about search criteria in Wordpress. It must have been with any conjunction terms which must be included while doing the search or we must try to know the search methodology of the Wordpress, which might be more useful for us while creating or searching.