Hi Ivan, I followed
this thread to get my own best results. I am sure it will give you your best results too. All thanks to SVOboy.
You certainly can do much better than what you are doing, because your vehicle has EPA ratings of 25/31 mpg city/highway. Typical hypermiler would get anything between 20-70% better than EPA.
Accelerate between 2100 and 2700 rpm and follow P&G aggressively. Keep your tyres at near sidewall max pressure. All the best and let us know the results.