Perhaps you should try some spelling variations:
china should » china could
chen should » when should, chen shou's, men should
wang kang » wang yang, wang liang, wang yan
dan yang » daun yang, tan yang, wang yang
lin dang » bin dann, ein dank, lin ling
le dang » le sang, le duong
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang kang ((chen should) OR (china should)) dan yang ((lin dang) or (le dang)) hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang kang ((chen should) OR (china should)) dan yang ((lin dang) OR (le dang)) hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang kang ((chen should) OR (china should)) dan yang ((lin dang) or (le dang)) hai ;".
• Adding a wildcard symbol may retrieve word variants: wang kang ((chen should) OR (china should)) dan yang ((lin dang) or (le dang)) hai ;*.