Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
land mine » land mines, land eine, land wine
tong shui » tong hui, cong shu, gong hui
yan yang » yao yang, dan yang, tan yang
lan minh » tuan minh, sang minh, anh minh
gong si » dong sin
jui li » hui li

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((yan yang) or (yang yang)) jui li ((lan minh) OR (land mine)) ((tong shui) or (gong si)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yan yang) OR (yang yang)) jui li ((lan minh) OR (land mine)) ((tong shui) OR (gong si)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yan yang) or (yang yang)) jui li ((lan minh) OR (land mine)) ((tong shui) or (gong si)) ;*".