so wt's the future of domains like .coo .ws .bz .nu .in .fm .de .eu is it worthing saving good domains for future please give some suggestions
IMHO no, there are simply too many and the enterprising countries will come up with more variants. Buy only what you need.
.IN (India), .DE (Deutschland aka Germany) and .EU (European Union) definitely have strong future for those localised markets IMHO - but personally I don't rate the rest so highly.