Perhaps you should try some spelling variations:
"comerciales internacionales" » "comercial internacional", "mercados internacionales", "comercio internacional"
"contexto internacional" » "congreso internacional", "comercio internacional", "movimiento internacional"
"coloquio internacional" » "comercio internacional", "congreso internacional"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("comerciales internacionales") or ((("contexto internacional") OR ("coloquio internacional"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comerciales internacionales") OR ((("contexto internacional") OR ("coloquio internacional"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"comerciales internacionales\") or (((\"contexto internacional\") OR (\"coloquio internacional\"))))*".
• Removing quotes may allow a broader search: (( comerciales internacionales ) or ((( contexto internacional ) OR ( coloquio internacional ))))*.