[求助] Amazon关键词以下情况要怎么撰写比较好？

比如我从亚马逊搜索下拉框里面 搜索seat cushion.
下拉框里面出现seat cushion for back pain,seat cushion for office chair, seat cushion for back support, seat cushion for tailbone pain.
想在一行里都写上。
那是写成seat cushion for back pain seat cushion for office chair seat cushion for back support seat cushion for tailbone pain?
还是 seat cushion for back pain office chair back support tailbone pain?
还是 seat cushion for back pain for office chair for back support for tailbone pain?
比较好？