Perhaps you should try some spelling variations:
"silver kilo release" » "silver vivo release", "silver vitro release", "silver ion release", "silver silk release", "silver alloy release"
"silver bio release" » "silver vivo release", "silver ion release", "silver co release", "silver b release", "silver birch release", "silver books release"
"silver bis release" » "silver basis release", "silver qgis release", "silver apis release", "silver bars release", "silver b release", "silver coins release"

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: (((("silver bio release") OR ("silver kilo release"))) OR ("silver bis release")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"silver bio release\") OR (\"silver kilo release\"))) or (\"silver bis release\"))".
• Removing quotes may allow a broader search: (((( silver bio release ) OR ( silver kilo release ))) or ( silver bis release )).
• Adding a wildcard symbol may retrieve word variants: (((("silver bio release") OR ("silver kilo release"))) or ("silver bis release"))*.