Sương is the Vietnamese word for "dew" or "mist" — evoking the morning fog over Vietnamese rice paddies.
Suong is widely used in Vietnam.
Suong does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Suong reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.