Perhaps you should try some spelling variations:
female head » female heads, female headed
wang young » wang hyoung, wang yong, kang young
male head » male headed, male heir, move head
zhang xin » zhang jian, zhang ming, zhang fan
wong sau » wong sam, wong siu, wong shiu
hong ghi » zhong zhi, hong g, hong hai

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 young ((male head) OR (female head)) irene zhang xin ((wong sau) OR (hong ghi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang young ((male head) OR (female head)) irene zhang xin ((wong sau) or (hong ghi)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang young ((male head) OR (female head)) irene zhang xin ((wong sau) or (hong ghi)) ;*.