Perhaps you should try some spelling variations:
knowing about » known about, know about, knowing your
ting knowing » seeing knowing, tree knowing
guang ting » huang ting, huang jing, huang ying
bin zhang » binh thang, li zhang, jia zhang
yang yang » wang yang, wang yan
wei guang » wei shang, wei qiang, fei huang
yan guan » gan guan, yan yuan, yang guang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: bin zhang ((yang yang) or (yan guan)) wei guang ting knowing about ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bin zhang ((yang yang) OR (yan guan)) wei guang ting knowing about ;*.