Perhaps you should try some spelling variations:
"advanced computations and computer program" » "advanced computational and computer program" (Expand search), "advance computational and computer program" (Expand search), "advanced communications and computer program" (Expand search), "advanced computation and computer program" (Expand search), "advanced computations in computer program" (Expand search), "advanced computations _ computer program" (Expand search)
"advanced modulation in computer program" » "advanced calculation in computer program" (Expand search), "advanced oxidation in computer program" (Expand search), "advanced modulation of computer program" (Expand search), "advanced modulation _ computer 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 in computer program") OR ("advanced computations and computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation in computer program\") OR (\"advanced computations and computer program\"))".
• Removing quotes may allow a broader search: (( advanced modulation in computer program ) OR ( advanced computations and computer program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation in computer program") OR ("advanced computations and computer program"))*.