Yes, The Netherlands have won Eurovision 4 times.
Alexander Rybak from Norway won the Eurovision 2009 contest.
Portugal has never won the Eurovision Song Contest
Alexander Rybak won Eurovision in 2009 with a record 387 points.
Azerbaijan won.
Lena Meyer-Landrut representing Germany won the 2010 Eurovision Song Contest.
Turkey won it
Albania won it
No, Bulgaria have never won the Eurovision Song Contest.
Portugal have never won the Eurovision Song Contest, up to and including the 2011 contest.
Abba won the Eurovision Song Contest of 1974, which was hosted by Great Britain.
Yes, Alexander Rybak won Eurovision 2009, representing Norway with the song Fairytale.