SELECT SUM("Games") FROM table_5710 WHERE "Points difference" = '18 - 33' AND "Points" < '4'
Points difference of 18 - 33, and a Points smaller than 4 is the total of what sum of games?
CREATE TABLE table_5710 (
    "Games" real,
    "Drawn" real,
    "Lost" real,
    "Points difference" text,
    "Points" real
)