Perhaps you should try some spelling variations:
"comercio dy marketing." » "comercio de marketing.", "comercio del marketing.", "comercio coy marketing.", "comercios de marketing.", "comercio dde marketing.", "comercio ddel marketing."
"comercio el marketing." » "comercio del marketing.", "comercio de marketing.", "comercio en marketing.", "comercio e marketing."
"comercio y marketing." » "comercio de marketing.", "comercio del marketing."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("comercio dy marketing.") OR ("comercio y marketing."))) or ("comercio el marketing."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("comercio dy marketing.") OR ("comercio y marketing."))) OR ("comercio el marketing.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"comercio dy marketing.\") OR (\"comercio y marketing.\"))) or (\"comercio el marketing.\"))".
• Removing quotes may allow a broader search: (((( comercio dy marketing. ) OR ( comercio y marketing. ))) or ( comercio el marketing. )).
• Adding a wildcard symbol may retrieve word variants: (((("comercio dy marketing.") OR ("comercio y marketing."))) or ("comercio el marketing."))*.