Perhaps you should try some spelling variations:
quang thang » quang thanh, quang khang, quang thong
trien hoat » tien hoa
kiem soat » kiem toan
thang van » tang van, thanh van, thong van
van trien » van tien, va trien, van tren
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: (( tin dung luan va kiem soat ) or ( tinh quang thang van trien hoat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan va kiem soat ) OR ( tinh quang thang van trien hoat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan va kiem soat ) or ( tinh quang thang van trien hoat ))*.