Add spaces: Youwerepaidyourfarmrent(4).

Answer: You were paid your farm rent (4) .

Add spaces: Finnair,UNICEFandAmadeushavejoinedforcestobenefittheworld'smostunprivilegedchildren.

Answer: Finnair, UNICEF and Amadeus have joined forces to benefit the world's most unprivileged children.

Add spaces: Avia3,5topayload,withandwithoutatrailerforexpressmail

Answer:
Avia 3,5 to payload, with and without a trailer for express mail