Perhaps you should try some spelling variations:
quang quan » quang tuan, quang uan, quan quan
tinh dung » trinh dung, tin dung, tinh huong
kiem soat » kiem toan
phan hieu » van hieu, phan kien, gian hieu
luan va » luan van, luat va
va kiem » van kien
ha hieu » nha hieu, va hieu, phap 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 dung luan va kiem soat ) or ( tinh quang quan ((ha hieu) OR (phan hieu)) hoat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan va kiem soat ) OR ( tinh quang quan ((ha hieu) OR (phan hieu)) hoat ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung luan va kiem soat ) or ( tinh quang quan ((ha hieu) OR (phan hieu)) hoat ))*".