Perhaps you should try some spelling variations:
keong shu » cong shu, jeong su
min keong » kin keong, min jeong, min keying
yang 47i » yang di, yang jui, yang xi
mui teng » jui meng
hui tong » hui ping, hui yang, hui ying
yang 47 » yang 4, yang 4.3
han min » han men, kan min, chan ming

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: ((yang 47) OR (yang 47i))ng ya ((mui teng) OR (hui tong)) han min keong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang 47) or (yang 47i))ng ya ((mui teng) OR (hui tong)) han min keong shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang 47) or (yang 47i))ng ya ((mui teng) OR (hui tong)) han min keong shu ;*.