Yahoo Email Search Overwrite


New Email
Yahoo email search will save recent searches with a magnify glass next to it. Everything I read says this cannot be deleted. Is there a way to overwrite by putting multiple new searches in. Does anyone have a hack. I have tried the multiple search with no luck so far. What determines what stays in the magnify glass?

This does not pertain to yahoo website searches. Focusing on the search in the email search function.