Perhaps you should try some spelling variations:
ffactor » factor, bifactor, effector, fffactor, ffactorr, ffactr
ffactores » factores, bifactores, effectores, fffactores, ffactorres, ffactres, factors, fatores, reactores, ffautores
act » fact
facto » ffacto, factor, fact, acto
factores » ffactores, factorres, factres, actores, fautores
actores » factores, autores

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "Peter McDonald (((ffactor OR act) OR (facto OR (ffactores OR (factores OR actores)))))~".
• Adding a wildcard symbol may retrieve word variants: Peter McDonald (((ffactor OR act) OR (facto OR (ffactores OR (factores OR actores)))))*.