Perhaps you should try some spelling variations:
"coder optimization methods based problem" » "coder optimization model based problem" (Expand search), "code optimization methods based problem" (Expand search), "modern optimization methods based problem" (Expand search), "powder optimization methods based problem" (Expand search), "coder optimization method based problem" (Expand search), "coder optimization methods used problem" (Expand search), "coder optimization methods and problem" (Expand search), "coder optimization methods based problems" (Expand search), "coder optimization methods based probe" (Expand search), "coder optimization methods posed problem" (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 methods based problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder optimization methods based problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder optimization methods based problem ) OR ( api python python python programming ))*.