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