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