More words better results sort.
physical characteristics humanoid
Egyptian pyramids power
You can use operators OR AND NOT (capital letters) to improve your search.
alien AND vessel
krulian OR pleiadian
alien AND NOT pleiadian
You can use double quotes to a exactly match.
Example, to search just questions with night and walkers together with a space in the middle :
You can use * symbol to partial search.
You can use parenteces to a complex search.
(chithok AND pleiades)
OR (pleiades AND krulians)