Quick search for information in a document, how to quickly and easily organize?

Question

Database

Good evening everyone,
perhaps my question is not directly related to programming, but I hope you can help me:
there are about 30 regulatory documents regarding construction, each with an average of 50 sheets of text - document files in doc or pdf format. Every time when developing a project, you have to shovel this bunch of documents, being afraid to miss something important, the routine is still the same ......
Please tell me how quickly and not difficult to systematize all this information, so that later you can quickly find the information you need, rather than re-read every time everything from cover to cover.
It is advisable not to copy-paste all this into some databases, but somehow organize work with the files themselves - i.e. for example, a new regulatory document came, performed a certain algorithm of actions with it once, and then you quickly and calmly work with it.

Answer 1

1) shove it into a paid Evernote
2) docfetcher.sourceforge.net/en/index.html