Perhaps you should try some spelling variations:
dang quang » dung quang, dang hung
tinh quan » tinh quang, trinh quan, tin quan
kiem soat » kiem toan
nang quan » ban quan, nang suat
bien soan » bien so
vat bien » vat lieu, cam bien
luan va » luan van, luat va
va kiem » van kien

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

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