tìm ngược tìm suôi 
to search high and low, look everywhere [ tìm ] : to find, look for, seek
[ ngược ] : opposite, reverse, contrary, inverse, upstream, up-river, upstream, upside down
[ tìm ] : to find, look for, seek
[ suôi ] : downstream, downriver; to go down a river
Most Common Compounds Set 1:
Most Common Compounds Set 2 :