Perhaps you should try some spelling variations:
"coder coder _ rectangular problem" » "coder coder _ rectangular prism" (Expand search), "coder coder _ rectangular tables" (Expand search), "coder coder _ rectangular grooves" (Expand search), "coder decoder _ rectangular problem" (Expand search), "code code _ rectangular problem" (Expand search), "decoder codec _ rectangular problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api 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 coder _ rectangular problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ rectangular problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ rectangular problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ rectangular problem") OR ("api python python python programming"))*.