Perhaps you should try some spelling variations:
"world shock discussion part" » "world short discussion part", "world work discussion part", "world shock discussion paper", "world stock discussion part", "world shook discussion part", "world stocks discussion part"
"old book discussion part" » "old book discussion paper", "old work discussion part", "old livebook discussion part", "old books discussion part", "old boy discussion part", "d book discussion part"

Try widening your search to All Fields.

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: (("world shock discussion part") OR ("old book discussion part")).
• Removing quotes may allow a broader search: (( world shock discussion part ) or ( old book discussion part )).
• Adding a wildcard symbol may retrieve word variants: (("world shock discussion part") or ("old book discussion part"))*.