Perhaps you should try some spelling variations:
"coder coder components scheduling problem" » "coder coder components screening problem" (Expand search), "coder coder components during problem" (Expand search), "coder coder complex scheduling problem" (Expand search), "coder cover components scheduling problem" (Expand search), "coder model components scheduling problem" (Expand search), "coder power components scheduling problem" (Expand search), "coder decoder components scheduling problem" (Expand search), "code code components scheduling problem" (Expand search), "decoder codec components scheduling problem" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 components scheduling problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder components scheduling problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder components scheduling problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder components scheduling problem") OR ("on python python python programming"))*.