Perhaps you should try some spelling variations:
"coder precoder some linear programming" » "coder decoder some linear programming" (Expand search), "coder precoder scheme linear programming" (Expand search), "coder aprender some linear programming" (Expand search), "coder precoce nome linear programming" (Expand search), "coder precoder time linear programming" (Expand search), "coder precoder some lines programming" (Expand search), "coder precoder one linear programming" (Expand search)
"api pythons python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons piton python programming" (Expand search), "api pythons pitons python programming" (Expand search), "api pythons pytm python programming" (Expand search), "api python 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 some linear programming") OR ("api pythons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder some linear programming\") OR (\"api pythons python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder some linear programming ) OR ( api pythons python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder some linear programming") OR ("api pythons python python programming"))*.