This author name, "authorsvarious," is split. Therefore it cannot be combined with any other author. No, not even "variousauthors" which is also split. Either unsplit and then combine or do not combine.
1. Various Authors (1)Author of Tell Me About The Catholic Faith: From The Bible to The Sacraments
2. Various Authors (2)Author of QFINANCE: The Dictionary of Accounting and Finance (QFINANCE: The Ultimate Resource)
3. Various Authors (3)Author of Super Manga Blast, No. 12; May 2001
10. Various Authors (10): Various authorsAuthor of W.i.t.c.h. #33 - Il dono più grande
11. Various Authors (11)Author of Midwest Old Threshers Cookbook