remicourtillon

I'm new to this, while checking if everything was okay with the Thing I just posted, I typed word for word certain tags I added to the Thing and some work some don't. What ennoys me the most it that the most important tags does not work when browsing Thingiverse. For Exemple one of the main tag, the most important one is "52mm lens hood" so I added "52mm_lens_hood" in the tags from the Thing, but when searching for "52mm lens hood" on thingiverse it doesn't show up. Is the tag system buggy or am I doing something wrong? PS: the thing