Perhaps you should try some spelling variations:
"single-versus reflexive camera / handbooks, manuals, etc" » "single-versus reflection camera / handbooks, manuals, etc", "single-der reflexive camera / handbooks, manuals, etc", "single-versus reflexive case / handbooks, manuals, etc", "single-versus reflexive game / handbooks, manuals, etc", "single-versus reflexive numbers / handbooks, manuals, etc", "single-versus refinedive camera / handbooks, manuals, etc", "single-versus refugeeive camera / handbooks, manuals, etc", "single-versus realive camera / handbooks, manuals, etc", "single-versus reflexive camera / handbooks, manual, etc"
"single-lens reflex camera / handbooks, manuals, etc" » "single-lens reflex cameras / handbooks, manuals, etc", "single-les reflex camera / handbooks, manuals, etc", "single-less reflex camera / handbooks, manuals, etc", "single-lens reflex camera / handbooks, manual, etc"
"single-loops reflex camera / handbooks, manuals, etc" » "single-loops reflex cameras / handbooks, manuals, etc", "single-loop reflexes camera / handbooks, manuals, etc", "single-loops refresh camera / handbooks, manuals, etc", "single-loops real camera / handbooks, manuals, etc", "single-loops reflex camera / handbooks, manual, etc"
"single-versus reflex camera / handbooks, manuals, etc" » "single-versus reflex cameras / handbooks, manuals, etc", "single-versus refined camera / handbooks, manuals, etc", "single-versus refugee camera / handbooks, manuals, etc", "single-versus real camera / handbooks, manuals, etc", "single-versus reflex camera / handbooks, manual, etc"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("single-lens reflex camera / handbooks, manuals, etc") OR ((("single-loops reflex camera / handbooks, manuals, etc") OR ((("single-versus reflex camera / handbooks, manuals, etc") OR ("single-versus reflexive camera / handbooks, manuals, etc")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"single-lens reflex camera / handbooks, manuals, etc\") or (((\"single-loops reflex camera / handbooks, manuals, etc\") or (((\"single-versus reflex camera / handbooks, manuals, etc\") OR (\"single-versus reflexive camera / handbooks, manuals, etc\"))))))".
• Removing quotes may allow a broader search: (( single-lens reflex camera / handbooks, manuals, etc ) or ((( single-loops reflex camera / handbooks, manuals, etc ) or ((( single-versus reflex camera / handbooks, manuals, etc ) OR ( single-versus reflexive camera / handbooks, manuals, etc )))))).
• Adding a wildcard symbol may retrieve word variants: (("single-lens reflex camera / handbooks, manuals, etc") or ((("single-loops reflex camera / handbooks, manuals, etc") or ((("single-versus reflex camera / handbooks, manuals, etc") OR ("single-versus reflexive camera / handbooks, manuals, etc"))))))*.