Perhaps you should try some spelling variations:
"synfire chain" » "entire chain", "synfue chains"
"synfire chains" » "entire chains", "synfue chainss"
"single chains" » "single chain", "single channel", "single domains"
"singie chain" » "single chain", "side chain", "single chip"

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: (((("synfire chain") OR ("synfire chains"))) OR ((("singie chain") OR ("single chains")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"synfire chain\") or (\"synfire chains\"))) or (((\"singie chain\") OR (\"single chains\"))))".
• Removing quotes may allow a broader search: (((( synfire chain ) or ( synfire chains ))) or ((( singie chain ) OR ( single chains )))).
• Adding a wildcard symbol may retrieve word variants: (((("synfire chain") or ("synfire chains"))) or ((("singie chain") OR ("single chains"))))*.