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