Perhaps you should try some spelling variations:
"preparation from trace" » "preparation _ trace", "preparation a trace", "preparation from trade", "preparation from grace", "preparation from tree"
"partitioning au travail" » "partitioning a travail", "partitioning run travail", "partitioning sat travail", "partitioning de travail"
"partition du travail" » "repartition du travail", "partition _ travail", "partition a travail"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("preparation from trace") or ((("partitioning au travail") or ("partition du travail"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("preparation from trace") OR ((("partitioning au travail") OR ("partition du travail")))).
• Removing quotes may allow a broader search: (( preparation from trace ) or ((( partitioning au travail ) or ( partition du travail )))).
• Adding a wildcard symbol may retrieve word variants: (("preparation from trace") or ((("partitioning au travail") or ("partition du travail"))))*.