Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
kann oman » kann man
head gain » heat gain
shang hai » shang kai, dang hai, hong hai
chang ha » chang mae
yang xi » yang yi, yang jui
oman a » roman a, oman _, norman a
a head » _ head

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

• Performing a fuzzy search may retrieve terms with similar spellings: kann oman a head gain ((yang liang) or (((yang xi) or (yang di)))) ((shang hai) or (chang ha)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kann oman a head gain ((yang liang) OR (((yang xi) OR (yang di)))) ((shang hai) OR (chang ha)) ;.
• Adding a wildcard symbol may retrieve word variants: kann oman a head gain ((yang liang) or (((yang xi) or (yang di)))) ((shang hai) or (chang ha)) ;*.