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)
"and computational codes computing program" » "and computational code computing program" (Expand search), "and computational models computing program" (Expand search), "and computational model computing program" (Expand search), "_ computational codes computing program" (Expand search), "and computational codes consulting program" (Expand search), "and computational codes computador program" (Expand search), "and computational codes computer programs" (Expand search), "and computational courses computing program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computational codes computing program\") OR (\"advanced computation and computer program\"))~".
• Removing quotes may allow a broader search: (( and computational codes computing program ) OR ( advanced computation and computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational codes computing program") OR ("advanced computation and computer program"))*.