Your houseplant is a hybrid variegated variety of a vining Pothos. Provide bright indirect light, regular water and feed with a slow-release fertilizer formulated for container plants. Do not allow plant to sit in water because it may lead to root rot. Water when the soil feels dry down to the first knuckle. Pothos is also one of the houseplants known to benefit air quality indoors. For optimum health, keep any houseplant away from heater/air conditioning vents. Yours seems to be in a location that does not receive enough light. Try an area that gets better indoor light and give it a good soaking in the sink allowing the water to drain out thoroughly before returning to its location along with a good slow release or organic fertilizer.