Perhaps you should try some spelling variations:
institutos tecnologias » instituto tecnologico
publicaciones y » publicaciones de, publicaciones del, publicacions de
tecnologias de » tecnologia de
y institutos » e institutos, en institutos, y sustitutos
mineral de » general de, mineria de, mineral y
minero de » mineria de
minera de » mineria de, minerales de

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

• Performing a fuzzy search may retrieve terms with similar spellings: publicaciones y institutos tecnologias de ((((minero de) OR (mineral de))) or (minera de)) espana ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: publicaciones y institutos tecnologias de ((((minero de) OR (mineral de))) OR (minera de)) espana ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "publicaciones y institutos tecnologias de ((((minero de) OR (mineral de))) or (minera de)) espana ;".
• Adding a wildcard symbol may retrieve word variants: publicaciones y institutos tecnologias de ((((minero de) OR (mineral de))) or (minera de)) espana ;*.