Perhaps you should try some spelling variations:
"pre-contractual analisis" » "pre-contrato analisis" (Expand Search), "pre-contractual dealings" (Expand Search), "pre-contractual conflicts" (Expand Search)
"pre-contratos analisis" » "pre-contrato analisis" (Expand Search), "pre-conflictos analisis" (Expand Search)
"pre-contractual del" » "pre-contractual de" (Expand Search), "pre-contractual en" (Expand Search), "pre-contractual y" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("pre-contractual del") OR ((("pre-contractual analisis") OR ("pre-contratos analisis"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"pre-contractual del\") OR (((\"pre-contractual analisis\") OR (\"pre-contratos analisis\"))))".
• Removing quotes may allow a broader search: (( pre-contractual del ) OR ((( pre-contractual analisis ) OR ( pre-contratos analisis )))).
• Adding a wildcard symbol may retrieve word variants: (("pre-contractual del") OR ((("pre-contractual analisis") OR ("pre-contratos analisis"))))*.