Perhaps you should try some spelling variations:
"coder coder planning case problem" » "coder modern planning case problem" (Expand search), "coder border planning case problem" (Expand search), "coder power planning case problem" (Expand search), "coder coder planning cases problem" (Expand search), "coder coder planning care problem" (Expand search), "coder coder planning scale problem" (Expand search), "coder decoder planning case problem" (Expand search), "code code planning case problem" (Expand search), "decoder codec planning case problem" (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 coder planning case problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder planning case problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder planning case problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder planning case problem") OR ("on python python python programming"))*.