Perhaps you should try some spelling variations:
plan ching » plan coping, plan using, plan scaling
long less » long list, long des, long lags
less plan » lesson plan, less than, les plans
ching lei » ching lee, ching leo, ching fein
tong shui » tong hui, cong shu, gong hui
lei kyun » lee kyung, lee kyu, pei yun
kyun jie » kyun pin
wang hui » wang hua, wang zhi, wang wei

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

• Performing a fuzzy search may retrieve terms with similar spellings: long less plan ching lei kyun jie ((tong shui) or (wang hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: long less plan ching lei kyun jie ((tong shui) OR (wang hui)) ;.
• Adding a wildcard symbol may retrieve word variants: long less plan ching lei kyun jie ((tong shui) or (wang hui)) ;*.