I have been earning BTC through different claiming faucets like BTC clicks, Freebitcoin, Bonus bitcoin, adBTC, Moonbitcoin, Fieldbitcoins with no referrals for about 4 months now. It is so hard. Can someone tell me how can I earn more?? 
I agree on you that you can earn BTC through different claiming faucets like Freebitcoin,Bonusbitcoin, adBTC, Moonbitcoin, Fieldbitcoins and BTC clicks. But me I earn my bitcoins on joining in signature campaigns here in the bitcoin forum, But you can also earn bitcoins through investing on bitcoin related businesses, playing gambling through gambling sites, trading other tokens and also mining. And now my earnings is not much high but I can buy things that I need and things that I want in my everyday life.