Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
quang van » quang ban, quang uan, quang vinh
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
quang va » quan va, quang ma, quang nam
quan van » luan van, quan va, quan luan
van kiem » va kiem, van kien, van hieu

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