Perhaps you should try some spelling variations:
"coder precoder data convex programming" » "coder precoder data cone programming" (Expand search), "coder precoder data computer programming" (Expand search), "coder decoder data convex programming" (Expand search), "coder recovery data convex programming" (Expand search), "coder precoder data context programming" (Expand search), "coder precoder data cover programming" (Expand search), "coder precoder data concept programming" (Expand search)
"api pitons python python programming" » "api pitons pythons python programming" (Expand search), "api pitons piton python programming" (Expand search), "api pitons pytm python programming" (Expand search), "api citons python python programming" (Expand search), "api pitoni python python programming" (Expand search), "api pitoes 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 data convex programming") OR ("api pitons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder data convex programming\") OR (\"api pitons python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder data convex programming ) OR ( api pitons python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder data convex programming") OR ("api pitons python python programming"))*.