[{"_id":"636a69262df2b0acadeb6fc2","companyId":"854725","buyerId":"10","companyName":"My Company!","country":{"dataId":"8","code":"ITA","value":"Italy"},"erpCode":"0000054321","legalForm":{"dataId":"7","code":"198","value":"S.R.L."},"searchKeys":[{"type":"address","value":"Main street 24","valueClean":"MainStreet24"},{"type":"country_key","value":"RO-123","valueClean":"R0123"},{"type":"vendor_name","value":"My Company!","valueClean":"MyCompany"},{"type":"vendor_full_name","value":"My Company! S.R.L.","valueClean":"MyCompanySRL"},{"type":"vendor_code","value":"0000054321","valueClean":"0000054321"},{"type":"vat","value":"IT01234567890","valueClean":"IT01234567890"},{"type":"website","value":"http://www.my-company.com/","valueClean":"httpwwwmycompanycom"},{"type":"contact","value":"luca.lanzafame@baglionispa.com","valueClean":"lucalanzafamebaglionispacom"},{"type":"company_registration_number","value":"RO-123","valueClean":"RO123"},{"type":"city","value":"Torino","valueClean":"Torino"}],"vat":"IT01234567890"}]

db.collection.aggregate([{$match:{$or:[{"searchKeys.value":{$regex:"company","$options":"i"}},{"searchKeys.valueClean":{$regex:"company","$options":"i"}}],"buyerId":"10"}},{$project:{companyId:1,buyerId:1,companyName:1,legalForm:1,country:1,vat:1,erpCode:1,searchKeys:{"$filter":{"input":"$searchKeys","cond":{"$or":[{$regexMatch:{input:"$$this.value",regex:"company",options:"i"}},{$regexMatch:{input:"$$this.valueClean",regex:"company",options:"i"}}]}}}}}])