Perhaps you should try some spelling variations:
"coder coder time estimation problem" » "coder coder time restoration problem" (Expand search), "coder coder time optimization problem" (Expand search), "coder coder time education problem" (Expand search), "coder coder the estimation problem" (Expand search), "coder coder state estimation problem" (Expand search), "coder coder age estimation problem" (Expand search), "coder decoder time estimation problem" (Expand search), "code code time estimation problem" (Expand search), "decoder codec time estimation problem" (Expand search), "coder cover time estimation problem" (Expand search), "coder modern time estimation problem" (Expand search), "coder over time estimation 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 coder time estimation problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder time estimation problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder time estimation problem") OR ("api python python python programming"))*.