Perhaps you should try some spelling variations:
"primary based medicines" » "primary based medicine", "primarily based medicines", "primer based medicines", "primary cases medicines", "primary phased medicines", "primary blastd medicines", "primary casesd medicines"
"primary case medicine" » "primary based medicine", "primary laser medicine", "primary carte medicine", "primary cause medicine", "primary cases medicine", "primary causes medicine"
"primary base medicine" » "primary based medicine", "primary biased medicine", "primary laser medicine", "primary phase medicine", "primary blast medicine", "primary cases medicine"

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: (((("primary case medicine") OR ((("primary base medicine") OR ("primary based medicines"))))) OR ("primary care medicine")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"primary case medicine\") or (((\"primary base medicine\") OR (\"primary based medicines\"))))) or (\"primary care medicine\"))".
• Removing quotes may allow a broader search: (((( primary case medicine ) or ((( primary base medicine ) OR ( primary based medicines ))))) or ( primary care medicine )).
• Adding a wildcard symbol may retrieve word variants: (((("primary case medicine") or ((("primary base medicine") OR ("primary based medicines"))))) or ("primary care medicine"))*.