Perhaps you should try some spelling variations:
"preparation from travail" » "preparation _ travail", "preparation a travail", "preparation from travel", "preparation from tamil", "preparation from trial"
"preparation from traffic" » "preparation _ traffic", "preparation a traffic", "preparation from paraffin", "preparation from graffiti", "preparation term traffic"
"repartition de travail" » "repartition des travail", "repartition du travail", "repartition et travail"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("preparation from travail") OR ("preparation from traffic"))) OR ("repartition de travail"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"preparation from travail\") OR (\"preparation from traffic\"))) or (\"repartition de travail\"))~".
• Removing quotes may allow a broader search: (((( preparation from travail ) OR ( preparation from traffic ))) or ( repartition de travail ))~.
• Adding a wildcard symbol may retrieve word variants: (((("preparation from travail") OR ("preparation from traffic"))) or ("repartition de travail"))*.