Terms for subject Informal containing ASER

English	Russian
as a rule of thumb	в качестве грубого ориентира (Andrey Truhachev)
as a rule of thumb	как грубый ориентир (Andrey Truhachev)
as bad as all that	хуже быть не может (dkozyr)
as happy as a clam at high tide	рад-радёхонек (predicate adjective: рада-радёхонька, радо-радёхонько, рады-радёхоньки)
as you wish	воля ваша (Mikhail11)