If page limit is an issue in scientific papers, then shortening references may be a way to squeeze out a few lines, e.g. using in the references section
IEEE Trans. Softw. Eng. instead of IEEE Transactions on Software Engineering.

This is based on the ISO 4: Words such as articles (the), conjunctions (and), and prepositions (for/of/in) are generally removed and a List of Title Word Abbreviations (LTWA) is used to abbreviate common title words.

You can look up the words in the LTWA at https://www.issn.org/services/online-services/access-to-the-ltwa/.

However, that list seems not be exhaustive: I have seen journals themselves using abbreviations not contained in the LTWS.

It therefore helps to search also for the full name and add as search term iso 4 or to check whether there is a Wikipedia article that contains the ISO 4 abbreviation or to look up the journal at https://www.resurchify.com/impact/details/ or at https://paperpile.com/guides/resources/abbreviations/