Literally: acquire – hand – win – hand
Alternately: Doing whatever you want without regard for other people. Caring only about one’s own needs, desires, or convenience. Selfish or willful behavior.
Notes: While toku is a valid reading of 得 in some contexts, it can only be pronounced e here. This yojijukugo joins a long list of terms, like 我田引水 and 独断専行, that criticize disruptive or excessive self-interest.