Perhaps you should try some spelling variations:
metaheuristicasos » metaheuristicas (Expand Search), metaheuristicos (Expand Search), metaheuristics (Expand Search), metaheuristicaasos (Expand Search), metaheuristicasasos (Expand Search)
algorithm » algoritmo (Expand Search)
algorithms » algoritmos (Expand Search)
metaheuristic » metaheuristica (Expand Search), metaheuristicas (Expand Search)
heuristic » heuristica (Expand Search), heuristicas (Expand Search)
heuristicaas » heuristicaaas (Expand Search), heuristicasaas (Expand Search)

Try widening your search to All Fields.

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

• Removing quotes may allow a broader search: (((metaheuristic OR metaheuristicasos) algorithm) OR ((heuristic OR heuristicaas) algorithms)).