Ask HN: Document management

Hey guys, I'm a lawyer and I find difficult to manage my files. Not the organization of the files management, but the problem is relate one case to another. I have everything in my head, so when I have a case "X" I can easily relate to cases "Y" and "Z" and start working from them, or even discard that and start from case "D" or zero. In the beginning/end of the case.

But with my new associates they don't have "my mind" as database and struggle to start the jobs and they do the job from scratch, searching in the legal systems without knowing most of the job is already done in our files.

I use Dropbox and MSword to store and make the documents (check example below).my Dropbox files: dp/client_name(client_number)/PI.docx (the name is always the same depending of the process phase) I use Google Sheets to organize the process but it's imitated to 2 fields (subject and description) so you must read the document to know if it's realated; I use Atlassian for Knowledge Database, but only general rules, not specific cases or files. I do not use management systems and I don't want to use.

I would like a solution inside Dropbox, Windows or Google Sheets, with my current files, automated. But if it's not possible I upload/server. As alternative, to manually sort them, I can imagine a tree style and hashtags to help finding them:

/subject: labor_law[+] /house_working [+] /starting Case001.docx #labor_law; #home_working; #company; #details1; #details2; #details3; Case002.docx # Case003.docx /hearing /appeal Apeal001.docx #court_x #appeal_favorable #especific_case_arguments /case_studies /accidents /starting /contracts / /other

I'm sorry if this is a stupid question, but I made a huge effort to find a a solution but I coudn't, I love hackernews, read everyday, I'm sure there's an easy solution out there that I cannot see. Thanks!