Perhaps you should try some spelling variations:
congo mann » congo can, congo mali, congo mining
mann money » can money, oman money
wang yang » wang yan, wang liang, wang yanling
yang jane » hwang jane, yang yang, yang fan
e gender » 2 gender, 3 gender, age gender
1 gender » 2 gender, 3 gender, 2.1 gender
4 gender » 2 gender, 3 gender, 4.4 gender
spur » sur

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: wang yang jane ((e gender) OR (((1 gender) OR (4 gender)))) congo mann money spur ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang jane ((e gender) or (((1 gender) or (4 gender)))) congo mann money spur ;*.