I am guessing this is the type of URL formula field you are looking for:
"http://elines.coscoshipping.com/NewEBWeb/public/cargoTracking/cargoTracking.xhtml"; &
"?CARGO_TRACKING_NUMBER_TYPE=" & URLEncode([BILLOFLADING]) &
"&CARGO_TRACKING_NUMBER=" & URLEncode([CARGO_TRACKING_NUMBER]) &
"&REDIRECT=1" &
"&uid=6157691370"
You are better of formatting a URL formula with
one query parameter per line even in situations above the last two parameters are constants and could be written as one string:
"&REDIRECT=1&uid=6157691370"
You may think you are shortening the formula if you do this or you may not think you don't need any greater generality but you will just be making your formula more difficult to read and maintain in the future.