you have to be Portuguese/Brasilian :-)

+1

More suggestions...

ä = a
ë = e
ğ = g
ı = i
İ = i
ö = o
ş = s
ü = u

+1

please also in Greek language

ά = α
έ = ε
ή = η
ί = ι
ό = ο
ύ = υ
ώ = ω

Best browser for Greek language has it the VirtualDj because can search Greek words with keyboard in English.
The letters are these:

Α = ά = α = a
Β = β = b
Γ = γ = g
Δ = δ = d
Ε = έ = ε = e
Ζ = ζ = z
Η = ή = η = h
Θ = θ = u
Ι = ί = ι = i
Κ = κ = k
Λ = λ = l
Μ = μ = m
Ν = ν = n
Ξ = ξ = j
Ο = ό = ο = o
Π = π = p
Ρ = ρ = r
Σ = σ = ς = s
Τ = τ = t
Υ = ύ = υ = y
Φ = φ = f
Χ = χ = x
Ψ = ψ = c
Ω = ώ = ω = ό = ο = v

also ñ for Spanish