Hey ​@Atthawut Chai! 

The word cloud filters out words categorised as not meaningful enough or unacceptable. The word ‘EL’ is categorised as not meaningful enough (most probably considered as a Spanish article/pronoun) and so it is filtered by the algorithm and doesn’t show up for everyone, even if it is a popular entry. You can learn more about how our Word Cloud functions in this guide. 

In this case, if possible, you could replace this word with a proper noun or write the whole word so it’s displayed on the screen. 

Hope this helps.