I think there is something wrong with oerba_yun_fang tag. She is a character from final_fantasy_xiii, but we are seeing many images which are not related to her.

Someone aliased "fang" to "oerba_yun_fang" which causes all instances of "fang" in newly-uploaded images to change to "oerba_yun_fang".

It has also made "fang" unsearchable, since any attempt to search it will return images containing "oerba_yun_fang".

How can i correct the error?

Since "fang" is technically unsearchable, I suggest tagging the images that were supposed to have "fang" with "fangs".