Perhaps you should try some spelling variations:
"coder optimization method packing problem" » "coder optimization methods packing problem" (Expand search), "code optimization method packing problem" (Expand search), "modern optimization method packing problem" (Expand search), "powder optimization method packing problem" (Expand search), "coder optimization method acting problem" (Expand search), "coder optimization method marking problem" (Expand search), "coder optimization methods locking 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.

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