Perhaps you should try some spelling variations:
yang jane » hwang jane, yang fan, yang jie
yang yang » wang yang, wang yan
do gender » does gender, 2 gender, 3 gender
o gender » go gender, 2 gender, 3 gender
cong van » congo can, duong van, cong sun
one spur » die spur
congo 2 » congo _, congo 1, congo 4

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang jane) or (yang yang)) ((o gender) OR (do gender)) ((cong van) or (congo 2)) one spur ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang jane) OR (yang yang)) ((o gender) OR (do gender)) ((cong van) OR (congo 2)) one spur ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang jane) or (yang yang)) ((o gender) OR (do gender)) ((cong van) or (congo 2)) one spur ;*".