Perhaps you should try some spelling variations:
"coder _ decoding java programming" » "coder _ decoding and programming" (Expand search), "coder _ decoding based programming" (Expand search), "coder _ decoding goal programming" (Expand search), "coder _ decoding gait programming" (Expand search), "coder _ decoding map programming" (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 _ decoding java programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ decoding java programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder _ decoding java programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder _ decoding java programming") OR ("on python python python programming"))*.