Perhaps you should try some spelling variations:
"program complementing" » "program commencing" (Expand Search), "program comprehension" (Expand Search)
"program improvements" » "general improvements" (Expand Search), "term improvements" (Expand Search), "group improvements" (Expand Search)
"program completinged" » "program completing" (Expand Search), "program completingir" (Expand Search), "program completed" (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: "((((\"program improvements\") OR (\"program complementing\"))) OR (\"program completinged\"))~".
• Removing quotes may allow a broader search: (((( program improvements ) OR ( program complementing ))) OR ( program completinged ))~.
• Adding a wildcard symbol may retrieve word variants: (((("program improvements") OR ("program complementing"))) OR ("program completinged"))*.