Perhaps you should try some spelling variations:
ffactor » factor, bifactor, effector, fffactor, ffactorr, ffactr
fffactores » ffactores, fbifactores, feffectores, ffffactores, fffactorres, fffactres, factores, fffautores
act » fact
facto » ffacto, factor, fact, acto
factres » ffactres, factores, factortes, facturas
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 (fffactores OR (factres OR actores)))))~".
• Adding a wildcard symbol may retrieve word variants: Peter McDonald (((ffactor OR act) OR (facto OR (fffactores OR (factres OR actores)))))*.