Perhaps you should try some spelling variations:
tinh thong » tinh thuong, trinh thong, tinh khong
tinh vuong » thinh vuong, tinh huong, minh vuong
vuong quan » luong quan, cuong quan, luong quang
hieu luat » hieu qua
luan kiem » luat kiem, khuan kiem, luong kiem
kiem soat » kiem toan
quan va » quan vi, quan ha, luan va
va hieu » van hieu, va dieu, va hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh thong quan va hieu luat ) or ( tinh vuong quan luan kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh thong quan va hieu luat ) OR ( tinh vuong quan luan kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh thong quan va hieu luat ) or ( tinh vuong quan luan kiem soat ))*.