Perhaps you should try some spelling variations:
trinh xuong » trinh duong, trinh huong, trinh phuong
tinh khang » tinh khong, trinh khung, tinh quang
khang quan » hang quan, khong quan, khang khuan
chien soat » thien hoat
kiem soat » kiem toan
van chien » van hien, van hieu, van tien
quan van » luan van, quan va, quan luan
quan vi » quan tri, quan doi
quan li » quan ly, quan tri

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh xuong ((quan vi) or (quan li)) kiem soat ) or ( tinh khang quan van chien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh xuong ((quan vi) OR (quan li)) kiem soat ) OR ( tinh khang quan van chien soat )).
• Adding a wildcard symbol may retrieve word variants: (( trinh xuong ((quan vi) or (quan li)) kiem soat ) or ( tinh khang quan van chien soat ))*.