Perhaps you should try some spelling variations:
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"advanced functions from perl programming" » "advanced selections from perl programming" (Expand search), "advanced solutions from perl programming" (Expand search), "advanced functionality from perl programming" (Expand search), "advanced functions from cell programming" (Expand search), "advanced functions from period programming" (Expand search), "advanced functions from kernel programming" (Expand search), "advanced functions from pearl programming" (Expand search), "advanced functions from peru programming" (Expand search), "advanced functions from peri programming" (Expand search)

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: "((\"advanced functions from perl programming\") OR (\"advanced python python computer programming\"))~".
• Removing quotes may allow a broader search: (( advanced functions from perl programming ) OR ( advanced python python computer programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced functions from perl programming") OR ("advanced python python computer programming"))*.