hunt down

phrasal verb
1
to search for somebody until you catch or find them, especially in order to punish or harm them
ردیابی و دستگیر کردن, پی‌کردن و یافتن
2
to search for something until you find it
جستجو کردن و پیدا کردن, پیگیری کردن و یافتن
We hunted down their phone number and gave them a call.
I hunted out my old school photos to show Mary.