Perhaps you should try some spelling variations:
land planning » based planning, road planning, dam planning
planning land » panning land, planning law, planning laws
changes made » changes a, changes due
sang minh » kang minah, anh minh, song min
congo shu » cong shu
a join » a joint, _ join, a john
a jin » a jine, a win, a ein

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: land planning land ((a jin) OR (a join)) ((sang minh) OR (changes made)) congo shu ;~.
• Adding a wildcard symbol may retrieve word variants: land planning land ((a jin) or (a join)) ((sang minh) or (changes made)) congo shu ;*.