The phrase "made fruitful" refers to the act of making something productive or fruitful. There are many synonyms that can be used in place of this phrase, including "enriched," "productive," "fruitful," "lucrative," "prolific," and "bountiful." Each of these words suggests a sense of abundance or productivity that comes from the successful application of a particular approach or strategy. For example, something that is enriched has been made more productive or successful through careful attention or investment, while something that is bountiful suggests an abundance of resources or opportunities that can be utilized in a productive or fruitful way.