Perhaps you should try some spelling variations:
"recursos minerales" » "recursos naturales"
"cursos generales" » "cargos generales", "cortes generales", "cuidados generales"
"arts generales" » "cortes generales", "gastos generales", "cargos generales", "art generales", "arte generales", "parte generales"
"arts general" » "art general", "arte general", "parte general"

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

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