Trying to get more behind? (5)
I believe the answer is:
after
I believe this is a double definition.
'trying to get' is the first definition.
(someone 'after' something is trying to get it)
'more behind?' is the second definition.
(coming after or behind)
(Other definitions for after that I've seen before include "Pursuing" , "Behind; seeking" , "Looking for" , "Following - behind" , "Chasing" .)