Complex sentence: He reached Académica de Coimbra's youth system at the age of 13, going on to represent that club, Estrela da Amadora, Olhanense and Gil Vicente in the Primeira Liga, and appeared for Aves and Beira-Mar in the Segunda Liga.
Split into simpler sentences: He reached Académica de Coimbra's youth system at the age of 13. He went on to represent that club, Estrela Amadora, Olhanense and Gil Vicente in the Primeira Liga, and appeared for Aves and Beira-Mar in the Segunda Liga.