Perhaps you should try some spelling variations:
managing large » managing change, managing labor
managing land » managing demand, managing labor, managing a
kang minh » kang minah, anh minh, kan min
sang minh » kang minah, anh minh, song min
law john » yow john
long shu » cong shu, tong shui, long du

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 ((managing land) OR (managing large)) law john ((kang minh) OR (sang minh)) long shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((managing land) OR (managing large)) law john ((kang minh) or (sang minh)) long shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((managing land) OR (managing large)) law john ((kang minh) or (sang minh)) long shu ;*.