Perhaps you should try some spelling variations:
"using computation _ precoder program" » "using computational _ precoder program" (Expand search), "using imputation _ precoder program" (Expand search), "using compilation _ precoder program" (Expand search), "using computation _ proder program" (Expand search), "using computation _ recovery program" (Expand search), "using computation _ precoce programa" (Expand search)
"using rotating python python programming" » "in rotating python python programming" (Expand search), "using rotating pythons python programming" (Expand search), "using rotating piton python programming" (Expand search), "using rotating pitons 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: (("using computation _ precoder program") OR ("using rotating python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computation _ precoder program\") OR (\"using rotating python python programming\"))".
• Removing quotes may allow a broader search: (( using computation _ precoder program ) OR ( using rotating python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computation _ precoder program") OR ("using rotating python python programming"))*.