def get_header_string(search_category, search_string):
	"""Returns personalized heading text depending on the passed search category."""
	header_string = ""
	csv_title_index = 0; csv_year_index = 1; csv_author_index = 2
	if search_category == csv_title_index:
		header_string = "\n\nResults books with titles containing: "
	elif search_category == csv_year_index:
		header_string = "\n\nResults for books published in the years: "
	elif search_category == csv_author_index:
		header_string = "\n\nResults for books written by: "
	return header_string + search_string