regex101: Search between Start Anchor and first word with two characters

Social:the literal text Social: (case sensitive)

Group cRegexGroupsName(?<cRegexGroupsName>.*?)

.*?any character (except for line terminators), repeated any number of times

\sany whitespace character

Negated Character Class[^\W]{2}

{2}matches exactly 2 characters outside the set below:

\Wany non-word character

\sany whitespace character

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

Social:(?<cRegexGroupsName>.*?)\s[^\W]{2}\s

New

Dirección Provincial de: LEONUnidad de Recaudación Ejecutiva nº: 24/01 NIF/CIF:  009810075T Apellidos y nombre/R.Social:  CLAUDIA RODRIGUEZ VEGA JOSE VICENTE AV CARDENAL LANDAZURI 7 BJ Domicilio: Tipo/Ident.: 10 24108755670   Régimen: 0111Localidad: 24003 LEON Nº Expediente: 24 01 17 00130817Importe deuda pendiente: 0,00 Nº Documento: 24 01 459 20 012724485NOTIFICACIÓN A LA ENTIDAD PAGADORA DEL LEVANTAMIENTO DE EMBARGO DE DERECHOSECONÓMICOS A 

^((?:\S+\s+){2}\S+).*

Regular Expressions 101

Regular Expression

Extraction