Perhaps you should try some spelling variations:
"processing digital statistics methods." » "processing vital statistics methods.", "processing capital statistics methods.", "processing criminal statistics methods.", "processing digital statistical methods.", "processing digital statistics methodology."
"processing data statistics methods." » "processing data statistical methods.", "processing data statistics methodology.", "processing spain statistics methods.", "processing units statistics methods.", "processing death statistics methods.", "processing state statistics methods.", "processing vital statistics methods."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("processing digital statistics methods.") or ("processing data statistics methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("processing digital statistics methods.") OR ("processing data statistics methods."))*.
• Removing quotes may allow a broader search: (( processing digital statistics methods. ) or ( processing data statistics methods. ))*.