It’s worth noting that Lakoff and John (1980) mark a revolution for cognitive linguistics by their grounding-breaking Metaphor We Live By when they present metaphor from the cognitive perspective. Lakoff and his colleagues have spent much time arguing that metaphor should be viewed as a conceptual phenomenon, not just a language one, notably Kovecses (2002, 2010), Lakoff (1987); Lakoff and Johnson (1980a, 1999); Lakoff and Turner (1989). As a result, their theory has served as a framework for further study.
In Vietnam, a number of scholars have developed a variety of reviews, overviews, and research on conceptual metaphor, for example, Suy nghi ve an du khai niem trong the gioi thi ca tu goc nhin cua ngon ngu hoc tri nhan of Nguyen (2009), An du y niem of Phan (2007), An du duoi goc do tri nhan of Phan (2009) and so on.
A large variety of research have been undertaken to study conceptual metaphors of both concrete and abstract concepts around our human worldwide, as well as in Vietnam. Abstract ideas have received special attention in the study of conceptual metaphors, which is understandable given that conceptual metaphor is the process of conceptualizing a more abstract domain in terms of more concrete domains as stated in Lakoff and Johnson (1980a). Up to now, the abstract concepts which have been examined are various such as life, emotion, namely, love of the authors such as Lakoff (1980), Kovecses (2010), Lakoff and Johnson (1980a), Kovecses (1986, 1988, 2000), Schroder (2009) and so on.