Perhaps you should try some spelling variations:
"coder coding using frequency method" » "coder coding using frequency methods" (Expand search), "coder coding using frequency meter" (Expand search), "coder coding using frequentist method" (Expand search), "coder coding single frequency method" (Expand search), "coder coding feeding frequency method" (Expand search), "coder coding grazing frequency method" (Expand search), "modern coding using frequency method" (Expand search), "color coding using frequency method" (Expand search), "odor coding using frequency method" (Expand search), "coder loading using frequency method" (Expand search), "coder modeling using frequency method" (Expand search), "coder drying using frequency method" (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 coding using frequency method") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding using frequency method\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding using frequency method ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding using frequency method") OR ("on python python python programming"))*.