Perhaps you should try some spelling variations:
factor » factors, factores, factr, actor, factsr, ffactor
ffactor » ffactors, ffactores, bifactor, effector, ffactr, factor, ffactsr, fffactor
factoresrres » factorsesrres, factoresesrres, factresrres, actoresrres, factsresrres, ffactoresrres
facto » fact, acto, facts, ffacto
fffactr » ffffactr
act » fact

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 (((factor OR (fffactr OR (ffactor OR (facto OR factoresrres)))) OR act))~".
• Adding a wildcard symbol may retrieve word variants: Peter McDonald (((factor OR (fffactr OR (ffactor OR (facto OR factoresrres)))) OR act))*.