"swift steps" is grammatically correct and usable in written English.
You can use this phrase when you want to describe something that you do quickly or something that requires fast action. For example, "I took swift steps to ensure that the project was completed on time and under budget."
In Albany, Senate aides took swift steps to remove Mr. Monserrate's likeness from official Senate property.
He said he expected the United States to take "swift steps" against the militants.
The new team has taken swift steps to try to restore confidence.
We then took a series of swift steps in a matter of days to answer Gaddafi's aggression.
Elsewhere, swift steps need to be taken to prove that this new government is serious about lessening its addiction to foreign aid.
The emir and his cabinet must secure the lead on this issue and take swift steps toward drafting women's rights measures and mobilizing parliamentary acceptance of them.
In one swift step, the landless become landlords, the aristocrats of the shanties.
Occidental Petroleum Corp., in yet another swift step to shed ancillary businesses, said Wednesday that it will sell its 51% interest in IBP Inc., the nation's largest producer of beef and pork products.
A main hindrance to a swift step-zero is that demarcation has stumbled.
The proposal calls for "swift early steps" to exploit a "honeymoon" period between his inauguration and the internal political jockeying preceding Iran's presidential elections in June.
There were swift international steps to ban releases of the ozone-destroying chemicals chlorofluorocarbons which, in a complicated reaction with intense cold and the first sunshine of the polar spring, caused huge ozone destruction each September.
