Mitch

Can anyone help please:confused: - I am constantly having difficulties finding files under the search function on Windows 7 Professional at work. I know they are there, but they do not come up at all or only older files show up. I search by file name or words within the file. I have created new folders and moved things around, not sure if this is the issue, as things have got progressively worse. Could it be a permissions issue and if so how can I check? Would appreciate any assistance anyone can give me.