Trouble finding census's
I am finding on numerous occasions that one or more census's can't be found during my research. There may be many reasons why this may be the case; such as mis-spelt surname or christian names, incorrect data entry, no entry given. But there is another reason being census records destroyed by fire or similar fate.
It's the latter I am inquiring about. Are there any details of what census records are not available. If there is, then I could refer to the list to save many hours searching for something I will never find. It will also indicate that I could continue searching.
Thanks in antisipation