small potatoes
US /smɔl pəˈteɪtoʊz/
UK /smɔl pəˈteɪtoʊz/

1.
poca cosa, insignificante
something or someone considered unimportant or insignificant
:
•
Don't worry about that minor issue; it's just small potatoes compared to the main problem.
No te preocupes por ese problema menor; es solo poca cosa comparado con el problema principal.
•
His previous achievements were small potatoes compared to his latest breakthrough.
Sus logros anteriores eran poca cosa comparados con su último avance.