Perhaps you should try some spelling variations:
"coder coder power scheduling problem" » "coder coder order scheduling problem" (Expand search), "coder coder packet scheduling problem" (Expand search), "coder coder driver scheduling problem" (Expand search), "coder decoder power scheduling problem" (Expand search), "code code power scheduling problem" (Expand search), "decoder codec power scheduling problem" (Expand search), "coder poder power scheduling problem" (Expand search), "coder modern power scheduling problem" (Expand search), "coder couter power scheduling 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 coder power scheduling problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder power scheduling problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder power scheduling problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder power scheduling problem") OR ("api python python python programming"))*.