[2] Later, he attended Vatroslav Jagić’s Slavic studies lectures in Vienna and conducted field research across Bosnia and Herzegovina and southern Croatia.

In 1885, in Matica hrvatska, he was appointed the editor of Hrvatske narodne pjesme (Croatian folk songs).

In his Crtice iz hrvatske književnosti, a two-volume work, he gave an extensive overview of the oldest Croatian literary monuments.

In 1892, he published his most recognized work, Hrvatski pravopis (Croatian Orthography), which was reprinted under the editorship of Dragutin Boranić until 1916.

Broz left a deep mark in the final standardization of Croatian: thanks to him, there was no normative duality, which had been threatened by the introduction of phonologically based spelling in Dalmatia and Bosnia (manual by Frane Vuletić), and by the introduction of some rules from the normative standard of the Zagreb school (separate writing of the future tense, writing foreign names as in the original, avoiding voicing assimilation in most cases [podcijeniti, odčepiti, etc.