Perhaps you should try some spelling variations:
"covariance estimation in coding program" » "variance estimation in coding program" (Expand search), "coverage estimation in coding program" (Expand search), "covariance estimation in cloning program" (Expand search), "covariance estimation in loading program" (Expand search), "covariance estimation in cooling programs" (Expand search), "covariance estimation of coding program" (Expand search), "covariance estimation on coding program" (Expand search), "covariance estimation in decoding program" (Expand search), "covariance estimation non coding program" (Expand search)
"advanced python programming coding program" » "advanced python programming using program" (Expand search), "advanced python programming code program" (Expand search), "advanced python programming computing program" (Expand search), "advanced method programming coding program" (Expand search), "advanced path programming coding program" (Expand search), "advanced symphony programming coding program" (Expand search), "advanced python programming cloning program" (Expand search), "advanced python programming loading program" (Expand search), "advanced python programming cooling programs" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"covariance estimation in coding program\") OR (\"advanced python programming coding program\"))~".
• Removing quotes may allow a broader search: (( covariance estimation in coding program ) OR ( advanced python programming coding program ))~.
• Adding a wildcard symbol may retrieve word variants: (("covariance estimation in coding program") OR ("advanced python programming coding program"))*.