Perhaps you should try some spelling variations:
"paths lineal formulacion" » "paths la formulacion", "paths una formulacion"
"paths anexo formulacion" » "paths de formulacion", "paths una formulacion", "paths web formulacion", "pais anexo formulacion"
"et integral formulation" » "e integral formulation", "_ integral formulation", "de integral formulation"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("paths lineal formulacion") OR ("paths anexo formulacion"))) OR ("et integral formulation"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"paths lineal formulacion\") OR (\"paths anexo formulacion\"))) OR (\"et integral formulation\"))".
• Removing quotes may allow a broader search: (((( paths lineal formulacion ) OR ( paths anexo formulacion ))) OR ( et integral formulation )).
• Adding a wildcard symbol may retrieve word variants: (((("paths lineal formulacion") OR ("paths anexo formulacion"))) OR ("et integral formulation"))*.