No one, except for you, has mentioned 'dobri.' Furthermore, you seem to have overlooked the fact that Tvrtko considered himself the heir of the Nemanjić dynasty, which was Serbian.
Interestingly, you also assert that Tvrtko conquered a part of Serbia, specifically Trebinje, which is now part of Bosnia. I'm not sure this supports your argument very effectively.
Bosnians speak of themselves as Bosnians, that's it. Bosnians have been in Bosnia from time immemorial, as long as there were people in Bosnia they called themselves Bosnians.
>No one, except for you, has mentioned 'dobri.' 'Dobri' meaning 'good', is what Bosnians were described by others and still do. >Furthermore, you seem to have overlooked the fact that Tvrtko considered himself the heir of the Nemanjić dynasty, which was Serbian. Tvrtko declared himself heir of Nemanjic dynasty to secure his position.
Bosnians in Bosnia called themselves and still do Bosnians but do omit the "dobri" these days.
From https://en.wikipedia.org/wiki/Bo%C5%A1njani The term good Bosnian (dobri Bošnjanin / добри Бошњанин) was not a geographical reference for the inhabitants along the Bosna River, but it was referred to the population of the entire medieval Bosnia, regardless of religion, which can be seen in various charters of the 14th and 15th centuries during the reign of ban Stjepan II Kotromanić, ban Tvrtko I Kotromanić, King Stjepan Ostoja, etc. In these charters, Bosnian rulers mention good Bosniaks as witnesses.[4
> In early 1377, Tvrtko successfully plotted with the Travunians to take over Trebinje, Konavli, and Dračevica, marking his final conquests of the Serbian lands.
This is exactly what I said, Bosnian King Tvrtko, you omit the part of Tvrtko being Bosnian, living in Bosnia speaking Bosnian language conquered Serbia. Do Bosnians get Serbia now?