Perhaps you should try some spelling variations:
"coder string matching conic programming" » "coder string matching logic programming" (Expand search), "coder string matching cone programming" (Expand search), "coder string matching convex programming" (Expand search), "coder string matching on programming" (Expand search), "coder string matching co2 programming" (Expand search), "coder string matching color programming" (Expand search), "cordel string matching conic programming" (Expand search), "closed string matching conic programming" (Expand search), "modelo string matching conic programming" (Expand search)
"python coding python python programming" » "python codigo python python programming" (Expand search), "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons 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 string matching conic programming") OR ("python coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder string matching conic programming\") OR (\"python coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder string matching conic programming ) OR ( python coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder string matching conic programming") OR ("python coding python python programming"))*.