Finding all XML Files containing specific strings using REGEX - regex

Question

I use VSCode for salesforce and I have hundreds of fieldsets in the sandbox, I would like to use REGEX to find all XML files that contains these 2 words in any order:
LLC_BI__Stage__c
LLC_BI__Status__c
I have tried using these REGEX but it did not work, I am assuming because the strings are in different lines:
(?=LLC_BI__Stage__c)(?=LLC_BI__Status__c)
^(?=.*\bLLC_BI__Stage__c\b)(?=.*\bLLC_BI__Status__c\b).*$
(.* LLC_BI__Stage__c.* LLC_BI__Status__c.* )|(.* LLC_BI__Status__c.* LLC_BI__Stage__c.*)
e.g, this XML File contains the 2 strings and should be returned
<displayedFields>
<field>LLC_BI__Amount__c</field>
<isFieldManaged>false</isFieldManaged>
<isRequired>false</isRequired>
</displayedFields>
<displayedFields>
**<field>LLC_BI__Stage__c</field>**
<isFieldManaged>false</isFieldManaged>
<isRequired>false</isRequired>
</displayedFields>
<displayedFields>
<field>LLC_BI__lookupKey__c</field>
<isFieldManaged>false</isFieldManaged>
<isRequired>false</isRequired>
</displayedFields>
<displayedFields>
**<field>LLC_BI__Status__c</field>**
<isFieldManaged>false</isFieldManaged>
<isRequired>false</isRequired>
</displayedFields>

Answer 1

You could use an alternation to find either one of them and according to this post use [\s\S\r] to match any character including newlines.
If there is an issue using [\s\S\r] you migh tuse [\S\r\n\t\f\v ]* instead.
(?:LLC_BI__Stage__c[\S\s\r]*LLC_BI__Status__c|LLC_BI__Status__c[\S\s\r]*LLC_BI__Stage__c)
Explanation
(?: Non capturing group
LLC_BI__Stage__c[\S\s\r]*LLC_BI__Status__c Match first part till second part
| Or
LLC_BI__Status__c[\S\s\r]*LLC_BI__Stage__c Match second part till first part
) Close group
Regex demo 1 and Regex demo 2