humanly possible
Realistically possible. Usually used in the phrase "as fast as humanly possible," meaning as fast as a person could possibly go. This cab driver needs to go as fast as humanly possible to give us any chance of making our flight! I got ready as fast as humanly possible and still missed the bus.
everything humanly possible
Everything that is realistically possible. This is my dream job, so I plan to do everything humanly possible to get it.
everything humanly possible
everything that is in the range of human powers. The rescuers did everything humanly possible to find the lost campers. The doctor tried everything humanly possible to save the patient.