Perhaps you should try some spelling variations:
quyet dinh » quy dinh
liu ying » liu ming, liu yaning
thi hanh » thi thanh
liu yang » lijun yang, liu yaning, lai yang
lu minh » le minh, tu minh, lu ninh
vu minh » vu dinh, van minh
liu jin » liu ming
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 jin) or (((liu ying) OR (liu yang))))) or (lu minh))) or (li yan))) or (((vu minh) or (((thi hanh) or (quyet dinh)))))) (people's vibration hardy)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((((liu jin) OR (((liu ying) OR (liu yang))))) OR (lu minh))) OR (li yan))) OR (((vu minh) OR (((thi hanh) OR (quyet dinh)))))) (people's vibration hardy)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((liu jin) or (((liu ying) OR (liu yang))))) or (lu minh))) or (li yan))) or (((vu minh) or (((thi hanh) or (quyet dinh)))))) (people's vibration hardy)*".