Perhaps you should try some spelling variations:
"specific protocols ports" » "specific protocol ports", "specified protocols ports", "specific proposals ports", "specific protocols part"
"specific protocols short" » "specific protocol short", "specified protocols short", "specific proposals short", "specific protocols secure", "specific protocols second"

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: "((\"specific protocols ports\") OR (\"specific protocols short\"))".
• Removing quotes may allow a broader search: (( specific protocols ports ) OR ( specific protocols short )).
• Adding a wildcard symbol may retrieve word variants: (("specific protocols ports") OR ("specific protocols short"))*.