Perhaps you should try some spelling variations:
"advanced computation and computer program" » "advanced computations and computer program" (Expand search), "advanced computational and computer program" (Expand search), "advance computational and computer program" (Expand search), "advanced computation of computer program" (Expand search), "advanced computation _ computer program" (Expand search)
"advanced modulation scheme computer program" » "advanced calculation scheme computer program" (Expand search), "advanced oxidation scheme computer program" (Expand search), "advanced modulation schemes computer program" (Expand search), "advanced modulation system computer program" (Expand search), "advanced modulation science computer program" (Expand search), "advanced modulation school computer 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 computation and computer program\") OR (\"advanced modulation scheme computer program\"))~".
• Removing quotes may allow a broader search: (( advanced computation and computer program ) OR ( advanced modulation scheme computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced computation and computer program") OR ("advanced modulation scheme computer program"))*.