Perhaps you should try some spelling variations:
"coder coding _ multiobjective problem" » "coder coding _ multiobjective problems" (Expand search), "coder coding _ multiobjective power" (Expand search), "coder coding _ objective problem" (Expand search), "modern coding _ multiobjective problem" (Expand search), "color coding _ multiobjective problem" (Expand search), "odor coding _ multiobjective 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 coding _ multiobjective problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding _ multiobjective problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding _ multiobjective problem") OR ("api python python python programming"))*.