Perhaps you should try some spelling variations:
ugt federacion » una federacion (Expand Search), la federacion (Expand Search), y federacion (Expand Search)
construccion y » construccion de (Expand Search), construccion del (Expand Search), reconstruccion de (Expand Search)
c federacion » la federacion (Expand Search), _ federation (Expand Search)
estatal de » estatal y (Expand Search)
de metal » de metales (Expand Search), de mesa (Expand Search), de mena (Expand Search)
y afines » a fines (Expand Search)