Perhaps you should try some spelling variations:
"by computational and computer programmers" » "by computational and computer programs" (Expand search), "by computational and computers programming" (Expand search), "by computational and computer program" (Expand search), "by computational fluid computer programmers" (Expand search), "_ computational and computer programmers" (Expand search), "and computational and computer programmers" (Expand search), "by computational _ computer programmers" (Expand search)
"advanced pitons python computer programming" » "advanced pitons python computer program" (Expand search), "advanced pitons python computer programs" (Expand search), "advanced chitosans python computer programming" (Expand search), "advanced pricing python computer programming" (Expand search), "advanced regions python computer programming" (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: "((\"by computational and computer programmers\") OR (\"advanced pitons python computer programming\"))~".
• Removing quotes may allow a broader search: (( by computational and computer programmers ) OR ( advanced pitons python computer programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computational and computer programmers") OR ("advanced pitons python computer programming"))*.