Hamburg climbed to fourth with a win over Energie Cottbus while Werder Bremen eased to a 4-0 victory against Stuttgart in Germany on Sunday.
Martin Jol's Hamburg saw off relegation-threatened Cottbus 2-0 to keep their title hopes alive.
Goals from Croatia international Ivica Olic and German playmaker Piotr Trochowski sealed the success at HSH Nordbank Arena.
Werder Bremen claimed an emphatic triumph over high-flying Stuttgart, running out 4-0 winners at Weserstadion.
Brazilian star Diego opened the scoring before Claudio Pizarro struck and a brace from Markus Rosenberg sealed the three points.