Perhaps you should try some spelling variations:
planning against » leaning against, planning gain, warning against
land planning » based planning, road planning, dam planning
against china » against child, against hiv, against crime
luong thanh » long thanh, truong thanh
hong than » hong tan, long thanh, hong hai
china ip » china i, china ii, china im
ip using » up using, ahp using, top using
using ti » using tik, using tri, using ai

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 against china ip using ti ((luong thanh) OR (hong than)) ;~.
• Adding a wildcard symbol may retrieve word variants: land planning against china ip using ti ((luong thanh) or (hong than)) ;*.