try looking throw these websites:
NovelUpdates: https://www.novelupdates.com/
Bookshushengbar: http://www.books.shushengbar.com/
Wuxiaworld: http://www.wuxiaworld.com/
they're like big directories that link you to where novels have been translated
I am pretty sure that 90% of Chinese dramas these days are adapted from a novel of some sorts, so you can do some searching on those websites I linked or through a search engine. If nothing pops up, then there probably isn't any translation for the novel you're searching for.
From your completed list, here are cdramas that are adapted from a novel (to my knowledge, I may be missing some):
- a love so beautiful
- lost love in times
- love o2o
- my huckleberry friends
- princess agents
- once upon a time (ten miles of peach blossoms/eternal love)
- the imperial doctress
- princess weiyoung
- when a snail falls in love