Perhaps you should try some spelling variations:
"parte integral formulation" » "parte lineal formulacion", "para integrar formulation"
"_ lineales formulacion" » "_ lineal formulacion", "_ caceres formulacion"
"et anexo formulacion" » "et lineal formulacion", "et de formulacion", "et una formulacion", "rey anexo formulacion", "web anexo formulacion", "i anexo formulacion"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parte integral formulation\") OR (((\"et anexo formulacion\") OR (\"_ lineales formulacion\"))))~".
• Removing quotes may allow a broader search: (( parte integral formulation ) OR ((( et anexo formulacion ) OR ( _ lineales formulacion ))))~.
• Adding a wildcard symbol may retrieve word variants: (("parte integral formulation") OR ((("et anexo formulacion") OR ("_ lineales formulacion"))))*.