Kata Kunci Pencarian:
- Bulgarian–Serbian wars (medieval)
- Principality of Serbia (early medieval)
- Bulgar–Serb War (839–842)
- Second Balkan War
- Bulgar–Serb War (853)
- Kingdom of Serbia (1217–1346)
- Serbo-Bulgarian War
- Bulgarian–Serbian wars of 917–924
- Bulgarian occupation of Serbia (World War I)
- Second Bulgarian Empire
