Perhaps you should try some spelling variations:
"advanced modulation _ computer program" » "advanced calculation _ computer program" (Expand search), "advanced oxidation _ computer program" (Expand search)
"advanced simulation graph computation program" » "advanced calculation graph computation program" (Expand search), "advanced simulation graph computational program" (Expand search), "advanced simulation graph computational programs" (Expand search), "advanced simulation graph compensation program" (Expand search), "advanced simulation graphic computation program" (Expand search), "advanced simulation path computation program" (Expand search), "advanced simulation group computation program" (Expand search), "advanced simulation growth computation program" (Expand search), "advanced simulation game computation program" (Expand search), "advanced simulation brams computation program" (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: (("advanced modulation _ computer program") OR ("advanced simulation graph computation program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation _ computer program\") OR (\"advanced simulation graph computation program\"))".
• Removing quotes may allow a broader search: (( advanced modulation _ computer program ) OR ( advanced simulation graph computation program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation _ computer program") OR ("advanced simulation graph computation program"))*.