Perhaps you should try some spelling variations:
plan scaling » can scaling, class scaling, when scaling
plan ching » plan coping, plan using
long days » long day's, longer days, long way
tong shui » tong hui, cong shu, gong hui
wang hui » wang hua, wang zhi, wang wei
lee kyu » lee kyung, lee keun, lei kyun

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

• Performing a fuzzy search may retrieve terms with similar spellings: long days ((plan ching) OR (plan scaling)) lee kyu jie ((tong shui) or (wang hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: long days ((plan ching) OR (plan scaling)) lee kyu jie ((tong shui) OR (wang hui)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long days ((plan ching) OR (plan scaling)) lee kyu jie ((tong shui) or (wang hui)) ;".
• Adding a wildcard symbol may retrieve word variants: long days ((plan ching) OR (plan scaling)) lee kyu jie ((tong shui) or (wang hui)) ;*.