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