Complex sentence: Dr. Alexiev had requested from one of his neighbors in Garabero to get a certificate from the municipality certifying that he is old and is in need male support in minting the agricultural work.
Split into simpler sentences: Dr. Alexiev had requested from one of his neighbors in Garabero a favor. This favor was for the elderly man to get a certificate from the municipality certifying that he is old and is in need of a male support in minting the agricultural work.