Perhaps you should try some spelling variations:
"cli primer" » "c primer", "css primer", "i primer", "cli pricer", "cli crimer"
"_ primer" » "_ prime", "_ primes", "_ primary", "_ pricer", "_ crimer"
"klein prime" » "kleine prime", "klein price", "klein crime"

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: (("klein prime") OR ((("cli primer") OR ("_ primer")))).
• Removing quotes may allow a broader search: (( klein prime ) or ((( cli primer ) or ( _ primer )))).
• Adding a wildcard symbol may retrieve word variants: (("klein prime") or ((("cli primer") or ("_ primer"))))*.