Here is the story:

Whenever I release my clutch pedal after switching gear, if the road condition is uphill/downhill + turning right,
the car will give me a glitching sound, like friction sound between 2 gearwheels.

It only happen in one condition : uphill/downhill + turning right, eg exiting highway with a big turning.
and it happens at gear 3,4 & 5.
If gear switching at flat and straight road, no sound will come out.

Solution tried:
1. Change clutch pedal
2. Change gear oil

But the problem still exist.

Anyone experience same problem before?
Or anyone know what is going on and can offer me a solution?
Thanks.