Most of the locals in Sabah and Sarawak do not have direct translation of "Thank You" . They do not simply saying "Thank you" after receiving some form of help because help is assumed . It is perceived that you should return the favor whenever possible.
Most of the modern locals now use the common word in Malay language to say 'thank you', which is "Terima kasih" whenever needed. Or simply "Thank You!". However, 'jian kenin' [meaning 'feel good'] is typically used in settled communities of Penan tribe in Sarawak, as a kind of equivalent to 'thank you'.