Describes the cause and action for error messages.
Error Message(English)：
search not author
Open khabsa-dissertation.pdf - Electronic Theses and Dissertations for ...
https://etda.libraries.psu.edu/files/final_submissions/11056
Repositioning Marketing In An Era Of Competition Change And Crisis ...
http://nationalgrasscut.com/administrator/components/library/repositioning-marketing-in-an-era-of-co・・・