@Maruf_Hassan as Madan has pointed, refer to the Guidelines for representing your business under Google My Business. Look under the “Names” section, you will find the correct recommendation.
Basically as per recommendation, all branches should be named as the actual company name without extra description or location in the name. Because searching on Google Maps actually takes into account the address field as well, so you will need to ensure the address is also accurate.
So even if a branch is named as “BRAC Bank Limited” and in the address field has “Dhanmondi”
Searching for “BRAC bank Dhammondi” or “BRAC bank in Dhammondi” should bring up this location first or fairly high up in the search results.