import re
 
def extract_all_after_string(search_after, reg, text):
    start = text.find(search_after)
    if start >= 0:
        print(f"Found at {start}, looking from {start+len(search_after)}, i.e. in '{text[start+len(search_after):]}'")
        return reg.findall(text, start+len(search_after))
    return []
 
text = "we have a Newliner Chatacter in 10000 the Middle of the sentence"
search_after = "a "
reg = re.compile(r'\w+')
print(extract_all_after_string(search_after, reg, text))

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