Help with non eng word rex search?

[inventsekar]

Hi All... hope you are doing good.. 

so i have been working on a small project
(thirukkural / "kural" - its a collection of 1330 two line songs in tamil language, one of a most famous literature work in tamil language. pls note, bible is the most translated book in whole world and kural is the second most translated book).

i would like to ingest this kural to splunk. its done easily. 

then i wanted to do some basic "sentiment analysis" on kural.. its done as well. (if u r free pls check this 4 mins video of this task at youtube)

thanks to @yannK .. his SPL worked perfect, got it from this page

now i would like to search with tamil words.. regular search is working fine. 

for example, i can search: 

source="fulltamil.txt" host="laptop" index="thirukkural" sourcetype="thirukkural" செயல்


the rex search i have been thinking:
source="fulltamil.txt" host="laptop" index="thirukkural" sourcetype="thirukkural"
| regex _raw="செயல்$"

now i would like to search a song which starts or ends with a particular word.. the rex/regex search is not working fine. pls suggest, thanks.