In this post I discussed the improved search bar in the new Google Drive. Unfortunately, there is no option in the provided File Types drop-down for finding your Google Drawings or Google Forms – unusual omissions, perhaps, as other Google Drive file types are listed:
Thankfully, there is a workaround; you can use the type: parameter mentioned in the previous post with the file type drawing or form:
This will pull out all of your Google Drawings (in this case), along with any drawings in other drawing file formats, like the .odg files shown here:
Likewise, type:form will list all of your Google Forms.