Perhaps you should try some spelling variations:
"coder coder oriented design problem" » "coder model oriented design problem" (Expand search), "coder under oriented design problem" (Expand search), "coder power oriented design problem" (Expand search), "coder decoder oriented design problem" (Expand search), "code code oriented design problem" (Expand search), "decoder codec oriented design 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 oriented design problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder oriented design problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder oriented design problem") OR ("api python python python programming"))*.