That's strange. We've done a lot of work on the combo charts since the current released update, so it could be the case, but in our current charts stick + stone and stick + iron are the only ways to make a spear.
In any case, stick + clay pot should be a surefire way to get bowl & chopsticks. Hope that works!
Of the flowers, you're still missing reed, cactus, rose, and orchid.