Rubuta ci gaba ga wannan sakin layi - A 1887 Vasconcelos ya zama farfesa a Faculty of Theology. A wannan matsayin ya koyar da darussa daban-daban, gami da Dogmatic Theology da General Isagogics da Archaeology, Hermeneutics da Heuristics. Vasconcelos shine mai shirya Jami'ar Jami'ar daga 1897 zuwa. Ya taka muhimmiyar rawa wajen kafa Faculty of Letters a Jami'ar Coimbra kuma ya zama Dean na farko a 1911, bayan da aka rufe Faculty of Theology saboda rashin ɗalibai. Shekaru da yawa ya kasance darektan Jami'ar Jami'ar, wanda ya rubuta littafi, yana amfani da matsayinsa don kare abubuwa da yawa na addini a lokacin tashin hankali a Portugal bayan juyin juya halin 5 ga Oktoba 1910.
Ka yi haƙuri. Ya rubuta don mujallu da jaridu daban-daban, musamman ga "Correio de Coimbra", jaridar diocese, da "O Instituto", wanda ya kasance memba na kwamitin edita. A matsayinsa na mai bincike an san shi da tsananin hankali da kuma sha'awar daki-daki, ƙarfin da ya ba wa ɗalibansa. Binciken nasa ya fi yawa ne ga Coimbra da jami'ar ta, yana haɓaka ra'ayin tarihin gida a Fotigal, amma kuma ya rubuta tarihin rayuwa, wanda aka fi sani da waɗanda ke kan sojan Fotigal da mawaƙi, Brás Garcia de Mascarenhas da masanin falsafar Spain Francisco Suárez. An kuma san shi sosai game da aikinsa na juzu'i 2 akan Juyin Halitta na Elizabeth na Aragon.