viper-search-scroll-threshold

viper-search-scroll-threshold is a variable defined in `viper-init.el'.
Its value is

2

Documentation:
If search lands within this threshold from the window top/bottom,
the window will be scrolled up or down appropriately, to reveal context.
If you want Viper search to behave as usual in Vi, set this variable to a
negative number.

You can customize this variable.