If you need to take into account several variants of spelling, including different languages, when searching for the desired word/person/company, use the | symbol. This symbol allows you to search for publications that contain at least one of the specified words.
The | symbol is called the OR operator and is used in many search languages.
You will find texts that contain either both words or at least one of the specified words. The | symbol can also be used to find unrelated objects, such as competitors or several top managers of a company.
Search for multiple keywords using the AND operator
If you want to search for several words so that they appear in the text simultaneously, you should use the & (AND) symbol. This symbol allows you to search for publications in which both words are present, but without a steady order of words.
For example, you need to track when persons were mentioned in the text at the same time:

spaceX&Ukraine or spaceX Ukraine (both queries are the same)
A space between words is equivalent to the & symbol. Thus, you get posts that necessarily contain both words in the text and at any distance from each other.
This search option can also be used while creating a topic.
Learn more about creating a topic in Semantrum. AND and OR operators can be used to create complex queries. Learn more about how to combine and cross keywords. You can also specify keywords that, should not appear in posts. Read more about excluding keywords from search (stop words).