Perhaps you should try some spelling variations:
thinking john » thinking can, thinking form, thinking four
john ngosong » john song
ngosong shin » song shin
yang liang » wang liang, yan liang, peng liang
sales case » sales call, cases case, sales career
sales past » states past, values past, sales pt
yang yang » wang yang, wang yan

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: wang ((yang liang) OR (yang yang)) ((sales case) OR (sales past)) thinking john ngosong shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang liang) or (yang yang)) ((sales case) OR (sales past)) thinking john ngosong shin ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yang liang) or (yang yang)) ((sales case) OR (sales past)) thinking john ngosong shin ;*.