Perhaps you should try some spelling variations:
"_ corporation technological report series" » "_ corporations technological report series", "_ collaboration technological report series", "_ incorporating technological report series", "_ corporation technological reform series", "_ corporation technological support series", "_ corporation technologies report series", "_ corporate technological report series"
"_ corporation technical report series" » "_ corporation ethical report series", "_ collaboration technical report series", "_ incorporating technical report series", "_ corporate technical report series"
"_ operation technical report series" » "_ operations technical report series", "_ iteration technical report series", "_ federation technical report series", "_ operating technical report series"
"_ operation technical report server" » "_ operations technical report server", "_ iteration technical report server", "_ federation technical report server", "_ operating technical report server"
"_ operative technical report series" » "_ operative mechanical report series", "_ operations technical report series", "_ operative technique report series", "_ operating technical report series"

Try widening your search to All Fields.

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: (((("_ corporation technical report series") OR ("_ corporation technological report series"))) OR ((((("_ operation technical report series") OR ("_ operative technical report series"))) OR ("_ operation technical report server")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"_ corporation technical report series\") or (\"_ corporation technological report series\"))) or (((((\"_ operation technical report series\") OR (\"_ operative technical report series\"))) or (\"_ operation technical report server\"))))".
• Removing quotes may allow a broader search: (((( _ corporation technical report series ) or ( _ corporation technological report series ))) or ((((( _ operation technical report series ) OR ( _ operative technical report series ))) or ( _ operation technical report server )))).
• Adding a wildcard symbol may retrieve word variants: (((("_ corporation technical report series") or ("_ corporation technological report series"))) or ((((("_ operation technical report series") OR ("_ operative technical report series"))) or ("_ operation technical report server"))))*.