Sometimes I know the author/s or the title of a paper I want to read, however going to Zotero, searching it and opening it can take some time. To speed up things a little bit I created taskflow to search only pdfs in my Zotero storage. I used the default PDF File Searcher workflow and modified it to search only in my Zotero storage. I added a complex shortcut to this workflow and then through BetterTouchTool I added an action whenever I press double right shift (Shift+Shift) to trigger the shortcut for searching pdfs in my Zotero storage. The complete setting is shown bellow