Perhaps you should try some spelling variations:
"de lineal formulacion" » "de la formulacion", "de una formulacion", "de anexo formulacion", "de lineas formulacion", "de linea formulacion", "_ lineal formulacion"
"la integral formulation" » "e integral formulation", "_ integral formulation", "et integral formulation"
"de integral formulation" » "e integral formulation", "de integrar formulation", "de integrales formulation"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("la integral formulation") OR ("de integral formulation"))) OR ("de lineal formulacion"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"la integral formulation\") OR (\"de integral formulation\"))) OR (\"de lineal formulacion\"))*".
• Removing quotes may allow a broader search: (((( la integral formulation ) OR ( de integral formulation ))) OR ( de lineal formulacion ))*.