It depends on the investing strategy of the fund. In general, short term bonds have lower returns due to the lower risk that the time from the time that the bonds are issued until they mature brings.
However, there are also high risk short term bonds, risk that can be the result of the creditworthiness of the issuer for example. If the fund invests in these bonds, then the return might be higher but the risk is also higher (which means that the returns can be quite high but the losses can be also quite high).
It’s hard to give an answer especially when each person has different risk preferences. In any case, you should study the investing strategy of each short term bond fund and invest in a fund that is in line with your preferences.