Perhaps you should try some spelling variations:
"using invariance in precoder program" » "using invariant in precoder program" (Expand search), "using invariants in precoder program" (Expand search), "using covariance in precoder program" (Expand search), "using invariance in proder program" (Expand search), "using invariance in recovery program" (Expand search), "using invariance in precoce programa" (Expand search), "using invariance and precoder program" (Expand search), "using invariance of precoder program" (Expand search), "using invariance in premodern program" (Expand search), "using invariance to precoder program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python 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 invariance in precoder program") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using invariance in precoder program\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using invariance in precoder program ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using invariance in precoder program") OR ("using coding python python programming"))*.