Perhaps you should try some spelling variations:
yang guang » yang yang, yang liang
yan guan » gan guan, yan yuan, yihan guan
tuan hua » tuan vu, yuan hui
tan hua » wang hua, tan chia, tan puay
yi yang » yin yang, yi gang, yu yang
land du » land d, land der, land die
h yang » _ yang, hui yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yan guan) or (yang guang)) ((tan hua) or (tuan hua)) ((yi yang) or (h yang)) 3.2 land du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan guan) OR (yang guang)) ((tan hua) OR (tuan hua)) ((yi yang) OR (h yang)) 3.2 land du ;.
• Adding a wildcard symbol may retrieve word variants: ((yan guan) or (yang guang)) ((tan hua) or (tuan hua)) ((yi yang) or (h yang)) 3.2 land du ;*.