Perhaps you should try some spelling variations:
"racial differentes situations" » "racial different situations", "racial difference equations", "racial differences situations", "crucial differences situations", "social differences situations"
"racial difference equation" » "racial difference equations", "racial differential equation", "racial differential equations", "racial differences equation", "facial difference equation", "social difference equation"

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: (("racial differentes situations") OR ("racial difference equation"))*.
• Removing quotes may allow a broader search: (( racial differentes situations ) or ( racial difference equation ))*.