Perhaps you should try some spelling variations:
"preparation a travail" » "preparation _ travail", "preparation au travail", "preparation de travail", "preparation _ travails"
"partition key travail" » "partition k travail", "partition test travail", "partition odes travail", "partition de travail", "partition key travel", "partition le 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 a travail") OR ("partition du travail"))) OR ("partition key travail"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"preparation a travail\") OR (\"partition du travail\"))) OR (\"partition key travail\"))".
• Removing quotes may allow a broader search: (((( preparation a travail ) OR ( partition du travail ))) OR ( partition key travail )).
• Adding a wildcard symbol may retrieve word variants: (((("preparation a travail") OR ("partition du travail"))) OR ("partition key travail"))*.