Perhaps you should try some spelling variations:
"engine optimization python computer program" » "engine optimization method computer program" (Expand search), "engine optimization option computer program" (Expand search), "engine optimization methods computer program" (Expand search)
"advanced modulation by coding program" » "advanced calculation by coding program" (Expand search), "advanced oxidation by coding program" (Expand search), "advanced modulation by cloning program" (Expand search), "advanced modulation by loading program" (Expand search), "advanced modulation by cooling programs" (Expand search), "advanced modulation of coding program" (Expand search), "advanced modulation in coding program" (Expand search), "advanced modulation and coding program" (Expand search), "advanced modulation by codoping program" (Expand search), "advanced modulation by cooling program" (Expand search), "advanced modulation by coating program" (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: "((\"advanced modulation by coding program\") OR (\"engine optimization python computer program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation by coding program ) OR ( engine optimization python computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation by coding program") OR ("engine optimization python computer program"))*.