Perhaps you should try some spelling variations:
"program complementing" » "program commencing" (Expand Search), "program comprehension" (Expand Search)
"program complementinged" » "program commencinged" (Expand Search), "program comprehensioned" (Expand Search), "program complementslinked" (Expand Search), "program complementsingle" (Expand Search), "program complemented" (Expand Search)
"program implementing" » "from implementing" (Expand Search), "trial implementing" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("program implementing") OR ((("program complementing") OR ("program complementinged"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"program implementing\") OR (((\"program complementing\") OR (\"program complementinged\"))))".
• Removing quotes may allow a broader search: (( program implementing ) OR ((( program complementing ) OR ( program complementinged )))).
• Adding a wildcard symbol may retrieve word variants: (("program implementing") OR ((("program complementing") OR ("program complementinged"))))*.