Perhaps you should try some spelling variations:
"coder optimization methods source problem" » "coder optimization model source problem" (Expand search), "code optimization methods source problem" (Expand search), "modern optimization methods source problem" (Expand search), "powder optimization methods source problem" (Expand search), "coder optimization methods course problem" (Expand search), "coder optimization method sources problem" (Expand search), "coder optimization methods resources problem" (Expand search), "coder optimization methods source problems" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder optimization methods source problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder optimization methods source problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder optimization methods source problem") OR ("api python python python programming"))*.