You can try.

In English:
www.circuitcellar.com --> to advanced projects;
www.elektor-electronics.co.uk --> medium and advanced projects;
www.epemag.com --> beginner, medium and advanced projects;
www.electronicsforu.com --> good projects;
www.siliconchip.com.au --> good projects;

In Portuguese:
www.edsaber.com.br
www.anep.com.br

In French:
www.electroniquepratique.com

If anyone have others sites, please post here.