Mathematical and special characters on mysql -

i need mysql database accept characters following:

≈ ≅ ≆ ≠ ⊂ ⊃ ⊄ ⊅ ⊆ ⊇ ⊈ ⊉ ⋅ ∥ ∣ √ ∛ ∜ ∞ ∓ ± ∑ ∌ ∋ ∈ ∉ ∅ ∃ ∄ ∀ ∁ ∩ ∪ ⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁿ ⁺ ⁻ ⁼ ⁽ ⁾  ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₊ ₋ ₌ ₍ ₎ → ← ↔ ↚ ↛ ⇆ ⇋ ⇌ Γ Δ Θ Λ  Π Φ Ω α β γ  δ ε η θ λ μ ℳ π ρ σ τ φ  Ϙ ϙ Ϝ ϝ Ϻ ϻ ϼ Τ 

does know how achieve it?

[edit]: tried using utf-8:

alter schema `acessoed_portal_student` default character set utf8     collate utf8_general_ci;  alter table  `question` default character set utf8    collate utf8_general_ci;   alter table  `question` change `description` `description`   text character set utf8 collate utf8_general_ci;  alter table  `question_response` default character set utf8    collate utf8_general_ci;   alter table  `question_response` change `description_response` `description_response`   text character set utf8 collate utf8_general_ci; 

what html encoding? can write symbol corresponding escape sequence example ∞ infinite symbol.