India, who were held to a goalless draw by Bangladesh, accounted for Sri Lanka 3-0 in their last group league match, the last two goals coming in extra time.
"It was a matter of getting into our playing style which we have been practicing in training sessions keeping the ball, good positioning, build-ups, high intensity, penetrations and the ability to create good chances. I am sure we will only get better as the tournament progresses," coach Floyd Pinto said in a statement.
"I am happy with the performance against Sri Lanka. But we need to replicate it every day to achieve the desired results. We would like to stay with our improvements in the semi-final against Maldives," he added.
Gurkirat Singh, who scored a brace against Sri Lanka, said the mood in the camp is "very positive" ahead of the semi-finals.
"As coach stated, we need to carry on and better ourselves. We are ready for the semi-finals. We are aware it won't be easy. But we will go in with a plan, and do our best to execute it."
"We were aware of the challenge against Sri Lanka. They were tough and good at the set-pieces. We just kept on going and were eventually rewarded," he explained.
( With inputs from IANS )