when and how did you plant them? in what kind of soil?
how much watering have they gotten and is it well drained?
if you gently pull the soil away from the top of a bulb is there a bulb still there or is it gone?
any green growth is a good thing, don't disturb that if possible, the leaves can break off pretty easy.
i've not done spring planting of tulips here at all so i don't have experience with that, but some people do force tulips in greenhouses for the blooms and such so it is possible, but the resulting bulb after the bloom may not be that great and need to recover for a year before it might bloom again. most of the time when people do the forcing of them out of season they discard the bulbs afterwards because they only wanted the bloom anyways.