Perhaps you should try some spelling variations:
"coder computational complexity doi problem" » "code computational complexity doi problem" (Expand search), "poder computacional complexity doi problem" (Expand search), "model computational complexity doi problem" (Expand search), "coder computational complexity how problem" (Expand search), "coder computational complexity dc problem" (Expand search), "coder computational complexity dsp problem" (Expand search), "coder computational complexity i problem" (Expand search), "coder computational complexity dois problemas" (Expand search), "coder computational complexity robin 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 computational complexity doi problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder computational complexity doi problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder computational complexity doi problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder computational complexity doi problem") OR ("api python python python programming"))*.