Filter Function Issue - Help?!

I am trying to make a searchable 'database' for my freelance work, which is finding charitable funders.

I want to input some search terms or numbers into a 'front-end sheet' and have the FILTER function find me only the info from that.

I have data as an example below and my question is how would I write the formulae, so that it will always filter based on the first column SIZE OF GRANT, as well as filtering partial text based on text in columns we would write.


As per the attached, those front-end examples should filter to show me only funders A and D, because they both meet the SIZE OF GRANT criteria of 5000 or above, AND both includes EITHER the words "art" or "building". But I am not sure what formulae I need to do this.


I have used the ISNUMBER(SEARCH functions and ISNUMBER(MATCH but match only finds the exact terms, whereas I want it to find partial text e.g. typing the building would find columns that say "building projects". The SEARCH function does this but it DOESN'T let me do it for more than 1 criteria as far as I can tell it?