Perhaps you should try some spelling variations:
"coder optimization using c program" » "code optimization using c program" (Expand search), "modern optimization using c program" (Expand search), "powder optimization using c program" (Expand search), "coder optimization and c program" (Expand search), "coder optimization using c programs" (Expand search), "coder optimization using abc program" (Expand search), "coder optimization using cfd program" (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), "rpa 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 optimization using c program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder optimization using c program\") OR (\"api python python python programming\"))".
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• Adding a wildcard symbol may retrieve word variants: (("coder optimization using c program") OR ("api python python python programming"))*.