The phrase "turn to account" can be replaced with a variety of synonyms, depending on the context in which it is being used. For example, you might use the phrase "capitalize on" to express the idea of making the most of a situation or resource. "Make use of" is another synonymous phrase, which can convey the sense of taking advantage of something in a positive way. Other options include "leverage," "exploit," and "utilize," all of which have similar connotations of finding value or benefit in some aspect of a given situation. Ultimately, the choice of synonym will depend on the specific context and meaning you wish to convey.