Perhaps you should try some spelling variations:
"coder coding using activity function" » "coder coding using activity functional" (Expand search), "coder coding using activity dysfunction" (Expand search), "coder coding using utility function" (Expand search), "coder coding fishing activity function" (Expand search), "coder coding guiding activity function" (Expand search), "coder coding mining activity function" (Expand search), "modern coding using activity function" (Expand search), "color coding using activity function" (Expand search), "odor coding using activity function" (Expand search), "coder loading using activity function" (Expand search), "coder modeling using activity function" (Expand search), "coder drying using activity function" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coding using activity function") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding using activity function\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding using activity function ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding using activity function") OR ("_ python python python programming"))*.