Moreover, Saunders et al. (2009) suggested that the researcher should build an accurate research strategy which is able to explain the concept of the theory and answer the research questions clearly, in order to create a valid questionnaire. Hence, the researcher has provided the questionnaire in both English and Thai language to avoid misunderstanding of questions and make sure that all of the respondents comprehended in the same way. Furthermore, a pilot test was undertaken to detect potential problems that may affect the validity and reliability of this research approach’s statement and to ensure that participants can understand all of questions clearly, ten respondents who live in Bangkok were chosen for this purpose. The pilot test assisted the researcher to produce a valid and effective questionnaire in order to collect the quality primary data, and this can refer to the validity and reliability of this research data collection.