Perhaps you should try some spelling variations:
"8.4 physician rostering" » "8.4 physician concerning", "8.4 physician shewing", "8.4 physician residing", "m.d physician rostering", "8 physician rostering", "8.4 physical rostering"
"8.4 physician rating" » "8.4 physician treating", "8.4 physician training", "8.4 physician patient", "m.d physician rating", "8 physician rating", "8.4 physical rating"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"8.4 physician rostering\") OR (\"8.4 physician rating\"))".
• Removing quotes may allow a broader search: (( 8.4 physician rostering ) OR ( 8.4 physician rating )).
• Adding a wildcard symbol may retrieve word variants: (("8.4 physician rostering") OR ("8.4 physician rating"))*.