I have a simple question – maybe too simple so that I don’t find an answer:

i have a collection project which has several fields but i want to perform full text search in to 3 fields – projectName, projectSummery, title. there is one array which has all keywords to be searched in to 3 fields. if keyword is found in any field it should come in to result. it will be great if fuzzy search can also be included.
i have tried with following aggregation but it is not working. only results for last element in array is returned.