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