Perhaps you should try some spelling variations:
"coder precoder sequence in programming" » "coder promoter sequence in programming" (Expand search), "coder reader sequence in programming" (Expand search), "coder promoter sequences in programming" (Expand search), "coder decoder sequence in programming" (Expand search), "coder precoder sequence and programming" (Expand search), "coder precoder sequence _ programming" (Expand search), "coder precoder sequence c programming" (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 precoder sequence in programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder sequence in programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder sequence in programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder sequence in programming") OR ("on python python python programming"))*.