The regional transport company "Verkehrsbetriebe Grafschaft Hoya" (VGH) does offer a connecting service from Syke (Linie 150 + 153) and Hoya (Bus No. 150) to Bruchhausen-Vilsen. At Syke railway station you get connections to trains for Bremen and Osnabrück.
Here you will find the current schedule, additional information is given by:
Verkehrsbetriebe Grafschaft Hoya GmbH
Am Bahnhof 1
D-27318 Hoya (Weser), Germany
Phone: +49 04251 / 9355 - 0
FAX: +49 04251 / 9355 - 39
Alll regional schedules are published in the internet, please have a look at "VBN Verkehrsverbund Bremen/Niedersachsen".