Perhaps you should try some spelling variations:
during costs » firing costs, during post, reducing costs
risks during » risk during, risks facing, banks during
gene risks » agency risks
costs chap » costs ch, costs chapter
yang july » yang judy, yang jui, yang jun
yang hua » wang hua, yang hui, ying hua
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang hyoung ((yang hua) or (yang july)) gene risks during costs chap ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang hyoung ((yang hua) OR (yang july)) gene risks during costs chap ;*.