Perhaps you should try some spelling variations:
"basicas mathematics computer programmers." » "basicas mathematics computer programming.", "basicas mathematics computers programming.", "basicas mathematics computer program.", "basicas matematicas computer programmers.", "business mathematics computer programmers."
"competencias basicas computer programs." » "competencias basic computer programs.", "competencias pascal computer programs.", "competencias business computer programs.", "competencias basicas computer programas.", "competencias basicas computer programa."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("basicas mathematics computer programmers.") OR ("competencias basicas computer programs."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"basicas mathematics computer programmers.\") OR (\"competencias basicas computer programs.\"))".
• Removing quotes may allow a broader search: (( basicas mathematics computer programmers. ) OR ( competencias basicas computer programs. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas mathematics computer programmers.") OR ("competencias basicas computer programs."))*.