Perhaps you should try some spelling variations:
lijun yang » liu yang
liu ming » liu ying, liu jin, liu yang
thu minh » thi minh, chi minh, vu minh
quy dinh » quyet dinh
tu minh » vu minh, thi minh, duc minh
lu minh » le minh, vu minh, u minh
lu ninh » ly ninh, le ninh, phu ninh
hardy » hard

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((liu ming) or (lijun yang))) or (li yan))) or (((((((lu minh) or (lu ninh))) or (((tu minh) OR (thu minh))))) or (((thi bich) or (quy dinh)))))) (people's vibration hardy)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((liu ming) OR (lijun yang))) OR (li yan))) OR (((((((lu minh) OR (lu ninh))) OR (((tu minh) OR (thu minh))))) OR (((thi bich) OR (quy dinh)))))) (people's vibration hardy)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((liu ming) or (lijun yang))) or (li yan))) or (((((((lu minh) or (lu ninh))) or (((tu minh) OR (thu minh))))) or (((thi bich) or (quy dinh)))))) (people's vibration hardy)*".