input: Write a python function to search a given source code for the given keywords and display the search results.
  assert search_source_code("#def hou(a, b):\n    # some code\n#def calc(a, b):\n    # some code", ['hou', 'calc'])==['hou', 'calc']
  assert search_source_code("def add(x, y):\n    return x + y", ['sub', 'mul'])==[]
  assert search_source_code("def foo():\n    pass\ndef bar():\n    pass", ['foo', 'bar'])==['foo', 'bar']
output: def search_source_code(source_code, keywords):
      results = []
      for keyword in keywords:
          if keyword in source_code:
              results.append(keyword)
      return results