How can I earn more from fixed deposit?

Interest rate differ slightly from bank to bank. It may be reduced by some points by the time you plan to make FD. Better go to your bank, the will give you exect figure for different year maturity.

E.g. you can get about 1272 for each 1000 Rs. invested for 3 years @ 8.1%

FIXED DEPOSIT IS NOT A WAY TO EARN MONEY.  THE BEST WAY TO EARN MONEY IS TO BUY A BOOK AND LEARN A NEW TRADE LIKE MAKING CAKES AT HOME, MAKING FURNITURE IN FREE TIME, MAKING FOOD AND SAVING ON RESTURANT BILLS, I.E VOCATIONAL ACITIVITES ARE BEST WAY TO MAKE MONEY.  INVESTING IN FIXED DEPOSITS IS FOR RETIRED PEOPLE OR FOR THOSE WHO HAVE SUDDENLY GOT A HUGE AMOUNT OF CASH.  THAT IS MY POINT OF VIEW, OTHERS MAY DIFFER. IT IS UPTO YOU TO ACCEPT THE VIEWPOINT OR MAKE YOUR OWN.