Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
quan quang » qua quang, quan quan, quat quang
kiem soat » kiem toan
minh quan » minh quang, minh tuan, manh quan
quang doc » quang hoc, quan doc, quang do
hieu luat » hieu qua
doc hieu » toc thieu, hoc thieu, hoc hien
luan va » luan van, luat va
va kiem » van kien
tinh » trinh, dinh, kinh

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 va kiem soat ) OR ( minh quan quang doc hieu luat ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quang luan va kiem soat ) OR ( minh quan quang doc hieu luat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh quang luan va kiem soat ) OR ( minh quan quang doc hieu luat ))*.