Perhaps you should try some spelling variations:
"coder coder resource planning problems" » "coder coder resource planning problem" (Expand search), "coder coder resource planning process" (Expand search), "coder coder resource packing problems" (Expand search), "coder model resource planning problems" (Expand search), "coder mode resource planning problems" (Expand search), "coder power resource planning problems" (Expand search), "coder decoder resource planning problems" (Expand search), "code code resource planning problems" (Expand search), "decoder codec resource planning problems" (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 resource planning problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder resource planning problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder resource planning problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder resource planning problems") OR ("on python python python programming"))*.