'seems robust' is correct and usable in written English.
It can be used in a sentence such as, "The new software system seems robust and capable of handling our heavy workload."
It certainly seems robust.
Fiennes's commitment to his craft seems robust and deeply held.
The research, published in the British Medical Journal, seems robust.
It seems robust but not enough to justify to that'.
Duck breast stuffed with pine nuts and pesto sauce, with braised escarole, seems robust for summer.
What seems robust and warming in the bleak cold now feels ponderous and unwieldy.
To anyone passing by during the middle of a weekday morning, business seemed robust.
These institutional safeguards seem robust when they are in place, so much so that we mock them as "bureaucracy".
Mr. Cheney has certainly seemed robust of late in the heavy's role of attacking Mr. Kerry's character and candidacy.
The call by the African Union did not seem robust enough to deflect efforts by the United States and its allies to push for international sanctions.
American growth prospects, sped along by the collapse in raw material costs and the price of oil, seem robust enough to take an upwards adjustment in their stride.
