Perhaps you should try some spelling variations:
precedents supplementary » proceedings supplementary, references supplementary, preface supplementary
severi supplementary » several supplementary, level supplementary, stars supplementary
eleven supplementary » level supplementary, selected supplementary, present supplementary

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: ((severi supplementary) OR (((eleven supplementary) OR (precedents supplementary)))) series.
• Adding a wildcard symbol may retrieve word variants: ((severi supplementary) or (((eleven supplementary) or (precedents supplementary)))) series*.