Yes, this thread needs to still be alive in mid 2018!! This is a problem for me! I recently had my MacBook Pro stolen, I bought an iPad to replace it and now am unable to search my calendar as I could on my laptop. Apple support could not understand what I was explaining so I will call back and refer them to this.
I kept all notes on meetings etc., both professional and personal (doctors ie.) on my calendar, so this is a disaster!! Before my laptop was stolen, I thought I had an iPhone problem because even though I did have “all events” chosen for the calendar I still couldn’t search beyond a year on my iphone. But everything else synced just fine. And the information is there and available, going back to 2012, but I can’t query it like I could on the MacBook Pro. And I have no idea of what years years or dates to search to go look through to go find entries. I have always just typed in a name or any words that tied to an entry and all the entries that matched would come up. I really counted on it to BE my memory and a second brain. I purposely bought my first Mac after a bad accident. It was great! I had notes of things no one else could remember!! I guess I either return this IPad or get some answers from Apple Support - has anyone bothered to call them? It is a free service these days- not like before - call 1800 my apple.