There are various synonyms for the phrase "learnt through". To acquire knowledge or skills, one can use words like "obtained through," "gained via" or "acquired from." Additionally, one could also use phrases such as "picked up from," "discovered by means of" or "mastered by way of" to convey a similar meaning. Alternatively, one can use the term "assimilated from," "digested via" or "internalized from" to indicate a deeper understanding of the learned material. Regardless of the word or phrase used, the essence of the message remains the same, which is to convey how the knowledge or skills were acquired.