Perhaps you should try some spelling variations:
knowing about » know about, knowing your
known about » know about
binh thang » binh thanh, bin zhang, binh thuan
yang guang » yang yang, yan guan, yang liang
yan yuan » yan guan, fang yuan, nan yan
16 human » 1 human, 6 human, 10 human
human me » human meta, human _, human co

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

• If you are trying to use Boolean operators, they must be ALL CAPS: binh thang ((yang guang) OR (yan yuan)) 16 human me ((knowing about) OR (known about)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "binh thang ((yang guang) or (yan yuan)) 16 human me ((knowing about) OR (known about)) ;~".
• Adding a wildcard symbol may retrieve word variants: binh thang ((yang guang) or (yan yuan)) 16 human me ((knowing about) OR (known about)) ;*.