Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ ς τ υ φ χ ψ ω

The following characters have a special meaning. Put them next to a word without a space between.
" "	encloses a sequence of words so that the sequence is searched as a whole.
+	The following word must appear.
-	The following word must not appear.
~	The following word should not appear but may appear.
<	The following word should appear but is not as relevant as other words.
>	The following word should appear and is more relevant than other words.
( )	groups words together so that one of the prefixes above can be applied to the whole group.
*	is a wildcard behind a word, representing null, one or several arbitrary characters.