Perhaps you should try some spelling variations:
factor » factors, factr, actor, factsr
ffactores » ffactorses, ffactres, factores, ffactsres, factors, actores, fatores
factores » factorses, factres, actores, factsres
factorres » factorsres, factrres, actorres, factsrres, factortes, factors, actores
facto » fact, acto, facts
factrres » factortes, factors, facturas

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

• Performing a fuzzy search may retrieve terms with similar spellings: Peter McDonald ((factor OR (facto OR (ffactores OR (factores OR (factorres OR factrres))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Peter McDonald ((factor OR (facto OR (ffactores OR (factores OR (factorres OR factrres))))))".
• Adding a wildcard symbol may retrieve word variants: Peter McDonald ((factor OR (facto OR (ffactores OR (factores OR (factorres OR factrres))))))*.