“…It has been mentioned in prominent research articles by (Baechler, 1971); (Cooper, 2001); (Cuc, D T T & D T Ng Quang & D Q Hai, 2017); (Herring, 2004); (Hess, 1978), (LePage, J. M., & Tenenbaum, 2011), (Jian, 1993); Waite, 2012). Studies directly related to this content can be mentioned as (Tue & Hoang, 2013), (Varga, 2009); (Szalontai, 2018). These studies show that diverse aspects of research content have received necessary attention over a long period of time.…”