Perhaps you should try some spelling variations:
"specific proteomics short" » "specific proteomic short", "specific proteins short", "species proteomics short", "specific proteomics soil", "specific proteomics sperm", "specific proteomics study"
"specific protocol ports" » "specific protection ports", "specific proteomic ports", "specific protein ports", "specific protocols ports", "specific protocol part", "specific protocol pearls"

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