Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
huong quan » luong quan, cuong quan, vuong quan
hieu soat » hieu suat, hieu hoat, hieu luat
kien soat » bien soan, kien hoa, dien hoat
kiem soat » kiem toan
van hieu » cao hieu
quan van » quan va, quan luan, quan doan
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang luan van hieu soat ) or ( anh huong quan van ((kien soat) OR (kiem soat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang luan van hieu soat ) OR ( anh huong quan van ((kien soat) OR (kiem soat)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quang luan van hieu soat ) or ( anh huong quan van ((kien soat) OR (kiem soat)) ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh quang luan van hieu soat ) or ( anh huong quan van ((kien soat) OR (kiem soat)) ))*.