I wonder why one game of mine isn't appeared in Search Result? 
I have 2 games, both are NSFW games, yet the first game "Mel's Saga" will appear in the search list if i searched for keywords Mel's Saga or master2015hp (my name). While the 2nd game that i had uploaded recently (like 1 month ago), it isn't appeared either if i searched for its name "Strip Card Duel" or "master2015hp". Why is that?

The only different thing i can think of is that the first game have a file attached to it, while the 2nd one hasn't got any file attached so far.
Does that mean until i have uploaded a file(s) to the game page, it won't be displayed in search result?

That's right. As explained in the FAQ, only games with files attached show up in search and browse. That's because people presumably search for games they can already play. You'll have to do your own marketing until release.

Thank you for the answer =D

Read the rules before posting a new topic. We have a big message on the new topic page for this board that gives you all the relevant information about how pages appear on our browse and search pages and we request that you confirm that you have read the rules before posting questions like this.

Thanks