You have to be a M&M member at the time your flights took place. No activities BEFORE your enrolment in M&M will be credited to your account. That is at least the official rule and I doubt that M&M would deviate from this in your case; it would be much easier for M&M to decline your request for miles by referring to this rule rather than going through all the hassle crediting miles for flights without BPs.

In addition, I doubt that M&M would credit miles for flights on Air India and Air China without BPs. It will be difficult for M&M to verify your flights on these carriers; there is only a limited co-operation between these carriers and M&M/LH.

Sorry to say this - as you do not even have the original BPs - there is no chance you will receive miles for these activities.