Perhaps you should try some spelling variations:
"coder relative error detection problem" » "coder relative error selection problem" (Expand search), "coder relative error detection program" (Expand search), "coder relative error demarcation problem" (Expand search), "coder relative error correction problem" (Expand search), "poder relativo error detection problem" (Expand search), "lower relative error detection problem" (Expand search), "mode relative error detection problem" (Expand search), "coder refractive error detection problem" (Expand search), "coder refractive errors detection 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 relative error detection problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder relative error detection problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder relative error detection problem") OR ("api python python python programming"))*.