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