Perhaps you should try some spelling variations:
"the emperor's voice in microsoft" » "the emperor's forces in microsoft", "the emperor's life in microsoft", "the emperor's justice in microsoft"
"The expert's guide in Microsoft" » "The expert guide in Microsoft"
"The expert's voice in Microsoft" » "The experts voices in Microsoft", "The expert voices in Microsoft", "The expert's point in Microsoft"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("The expert's voice in Microsoft") OR ("The expert's guide in Microsoft"))) OR ("the emperor's voice in microsoft")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"The expert's voice in Microsoft\") OR (\"The expert's guide in Microsoft\"))) or (\"the emperor's voice in microsoft\"))".
• Removing quotes may allow a broader search: (((( The expert's voice in Microsoft ) OR ( The expert's guide in Microsoft ))) or ( the emperor's voice in microsoft )).
• Adding a wildcard symbol may retrieve word variants: (((("The expert's voice in Microsoft") OR ("The expert's guide in Microsoft"))) or ("the emperor's voice in microsoft"))*.