Perhaps you should try some spelling variations:
yihan guan » yan guan
quan guo » quan guan
3.2 long » 3.2 land
tuan hua » tuan vu, yuan hui
tan hua » wang hua, tan chia, tan puay
yi yang » yin yang, yi gang, yu yang
long du » long d, long do, long run
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: ((quan guo) or (yihan guan)) ((tan hua) or (tuan hua)) ((yi yang) or (h yang)) 3.2 long du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quan guo) OR (yihan guan)) ((tan hua) OR (tuan hua)) ((yi yang) OR (h yang)) 3.2 long du ;.
• Adding a wildcard symbol may retrieve word variants: ((quan guo) or (yihan guan)) ((tan hua) or (tuan hua)) ((yi yang) or (h yang)) 3.2 long du ;*.