Perhaps you should try some spelling variations:
"brief implementing" » "brief implemented" (Expand Search)
"program implementinged" » "program implementeded" (Expand Search), "program implemented" (Expand Search)
"trial implementingedinginged" » "trial implementededinginged" (Expand Search), "trial implementedinginged" (Expand Search), "trials implementingedinginged" (Expand Search)

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: "((\"brief implementing\") OR (((\"program implementinged\") OR (\"trial implementingedinginged\"))))~".
• Removing quotes may allow a broader search: (( brief implementing ) OR ((( program implementinged ) OR ( trial implementingedinginged ))))~.
• Adding a wildcard symbol may retrieve word variants: (("brief implementing") OR ((("program implementinged") OR ("trial implementingedinginged"))))*.