1
I need to search for my keys.
To sign this, point to yourself for 'I,' sign 'NEED,' and then perform the 'search' sign. Finish by signing 'MY' and 'KEYS.' The circular motion of the 'search' sign perfectly captures the action of looking around your house for a lost item.
2
Did you search the internet?
Point to the person for 'YOU,' sign 'INTERNET,' and then use the 'search' sign. Because this is a yes/no question, remember to raise your eyebrows and lean forward slightly while signing to indicate that you are asking a question.
3
We are searching for a new house.
Sign 'WE,' then use the 'search' sign, followed by 'NEW' and 'HOUSE.' To show that this is an ongoing, extensive search rather than a quick look, you can make the circles slightly larger and repeat the motion a few extra times.