import re
from bs4 import BeautifulSoup
s = '<tag>uTSqUYRR8gapple</tag><tag>K9VGTZM3h8</tag><tag>pearTYysnMXMUc</tag><tag>udv5NZQdpzpearz5a4oS85mD</tag>'
soup = BeautifulSoup(s, "html5lib")
tags = soup.find_all(text=re.compile(r'pear'))
print tags
aW1wb3J0IHJlCmZyb20gYnM0IGltcG9ydCBCZWF1dGlmdWxTb3VwCgpzID0gJzx0YWc+dVRTcVVZUlI4Z2FwcGxlPC90YWc+PHRhZz5LOVZHVFpNM2g4PC90YWc+PHRhZz5wZWFyVFl5c25NWE1VYzwvdGFnPjx0YWc+dWR2NU5aUWRwenBlYXJ6NWE0b1M4NW1EPC90YWc+Jwpzb3VwID0gQmVhdXRpZnVsU291cChzLCAiaHRtbDVsaWIiKQp0YWdzID0gc291cC5maW5kX2FsbCh0ZXh0PXJlLmNvbXBpbGUocidwZWFyJykpCnByaW50IHRhZ3M=