Alyssa - I'm not sure why you are struggling with those particular plants. I know from experience that all three can do well indoors for many years. Hedera Ivies have somewhat fragile root systems, don't like to be repotted and are susceptible to spider mites, especially in warm dry air. Wandering Jews do best in a very sunny window and are fairly tolerant of watering lapses, but do require regular pruning to keep from becoming leggy. I have described Croton care above. I hope that helps.
