Perhaps you should try some spelling variations:
"coder coding _ array processing" » "coder coding _ dairy processing" (Expand search), "coder coding _ energy processing" (Expand search), "coder coding _ query processing" (Expand search), "modern coding _ array processing" (Expand search), "color coding _ array processing" (Expand search), "odor coding _ array processing" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 _ array processing") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding _ array processing\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding _ array processing ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding _ array processing") OR ("on python python python programming"))*.