Para identificar quem fez uma determinada postagem no glossário, buscando pela palavra chave, execute no banco o seguinte comando:
SELECT u.id,u.firstname,u.lastname,u.email,g.id,g.concept,g.timecreated FROM mdl_user u INNER JOIN mdl_glossary_entries g ON g.userid=u.id where g.concept LIKE '%xxxx%'
SELECT u.id,u.firstname,u.lastname,u.email,g.id,g.concept,g.definition,g.timecreated FROM mdl_user u INNER JOIN mdl_glossary_entries g ON g.userid=u.id where g.id >0 AND(g.concept LIKE '%xxx%' OR g.definition LIKE '%xxx%' ) ORDER BY g.timecreated DESC