Let's find some books and articles on the negotiation of the Beijing Treaty.
It helps to know the name and date of the conference where the treaty was negotiated.
June 2012, the Beijing Diplomatic Conference of the WIPO
Also try searching the indexes below for the terms Paris and 10bis. (Don't worry, indexes are just another kind of database that mostly contains citations rather than full-text.)
Try these search terms
"Beijing Diplomatic Conference"
"Beijing Diplomatic Conference of the WIPO"
"Beijing Treaty on Audiovisual Performances"
Beijing Treaty on Audiovisual Performances (2012 June 24)