Perhaps you should try some spelling variations:
mestral » bimestral (Expand Search), semestral (Expand Search)
trisemestral » trisebimestral (Expand Search), trisesemestral (Expand Search), trimestral (Expand Search), semestral (Expand Search)
trisesemestral » trisesebimestral (Expand Search), trisesesemestral (Expand Search)
trisebimestral » trisebibimestral (Expand Search), trisebisemestral (Expand Search)
trisebisemestral » trisebisebimestral (Expand Search), trisebisesemestral (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (mestral OR ((trisemestral OR trisesemestral) OR (trisebimestral OR trisebisemestral))) universidad~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(mestral OR ((trisemestral OR trisesemestral) OR (trisebimestral OR trisebisemestral))) universidad".
• Adding a wildcard symbol may retrieve word variants: (mestral OR ((trisemestral OR trisesemestral) OR (trisebimestral OR trisebisemestral))) universidad*.