Perhaps you should try some spelling variations:
"de mathematics computer programmers." » "de mathematics computer programming.", "de mathematics computers programming.", "de mathematics computer program.", "de mathematica computer programmers.", "de matematicas computer programmers.", "de matematica computer programmers."
"basicas matematicas computer programs." » "basicas matematicas como programs.", "basicas matematicas comics programs.", "comicas matematicas computer programs.", "benditas matematicas computer programs.", "fisica matematica computer programs.", "basicas matematicas computer programas.", "basicas matematicas computer programa."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("de mathematics computer programmers.") or ("basicas matematicas computer programs."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("de mathematics computer programmers.") OR ("basicas matematicas computer programs.")).
• Removing quotes may allow a broader search: (( de mathematics computer programmers. ) or ( basicas matematicas computer programs. )).
• Adding a wildcard symbol may retrieve word variants: (("de mathematics computer programmers.") or ("basicas matematicas computer programs."))*.