Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong luan » luong quan, luong xuan, cuong luan
hieu soat » hieu suat, hieu hoat, hieu luat
quang uan » quang tuan, quang ban, quang tran
van hieu » cao hieu
uan van » quan van, tan van, san van
bien so » bien doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh luong luan van hieu soat ) or ( tinh quang uan van ((bien soan) OR (bien so)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh luong luan van hieu soat ) OR ( tinh quang uan van ((bien soan) OR (bien so)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh luong luan van hieu soat ) or ( tinh quang uan van ((bien soan) OR (bien so)) ))*".