yattah—engaged SB 3.25.26
yattah—being on guard SB 4.10.22
yattah—with great endeavor SB 8.7.1
yattah—endeavor SB 8.7.5
yattah—engaged with full attention and effort SB 8.10.1
yattah—with great care SB 10.11.31-32
Can't find any compound Sanskrit words containing yattah.