Perhaps you should try some spelling variations:
tinh khong » tinh khang, tinh huong, benh khong
tinh dung » trinh dung, tin dung, tinh quang
dung quan » dung quang, dung luan, luong quan
hieu luat » hieu qua
kiem soat » kiem toan
quan li » quan ly, quan tri
li hieu » ly hieu, le hieu, li hien
lan van » luan van, lang van, tan van

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 quan li hieu luat ) or ( tinh khong ((quan luan) or (lan van)) kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung quan li hieu luat ) OR ( tinh khong ((quan luan) OR (lan van)) kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung quan li hieu luat ) or ( tinh khong ((quan luan) or (lan van)) kiem soat ))*.