Digestive system keeps rumbling in office

My intestines and stomach keep making really loud rumbling noise a few times in 1 day at office. It is really embarrassing and I have been trying ways to address it, such as taking Kagome fibre drinks, probiotics yoghurt and eating more fat from food. Problem still persists. When I went back to home country for a few days, I ate and did not watch my diet but did not have digestive issues. Does anybody haw advice on reducing rumbling noise?

by bigplays1234