At the top of the Google Drive window, you will see a box that says "Search Drive". From here you can search for the file you are looking for, but in order to get the best search results possible, it helps to narrow down your choices.
You can select PDFs, Text Docs, Spreadsheets, Photos & Images, Presentation, Videos, and more. If you need to get even more specific, you can click More search tools and a whole new option of tools will pop up. You can search for file type, Date Modified, Item Name, Has the Words, Owner, Shared with, and Located in. This will really help you narrow your search.
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