Here are some other options, depending on the context:
* Palagay: This translates to "assumption" or "supposition" and is often used when talking about a personal belief or idea.
* Paniniwala: This translates to "belief" and is used for a more general concept of a theory.
* Doktrina: This is used for a more formal and established theory, often associated with religious or philosophical beliefs.
* Pamamaraan: This translates to "method" and can be used when discussing scientific theories or models.
The best translation will depend on the specific context of the sentence.