There is some Search of notes?

Hello, im Daniel and that is my question about notes, because there are moments when i need fasters movements to hit where i want to go in the text for several reasons! like chapters, titles, articles, etc...and the searcher of words is a little much confuse and in some texts useless.

With a search engine of notes and memos would be easier to work with pdf's simultaneously, would fast and mainly a quick search of what really interests us. Thanks for the attentio. Daniel.