Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh quang
quang van » quang ban, quan van, quang va
quang uan » quang tuan, quang ban, quang tran
hieu luat » hieu qua
nang quan » ban quan, nang suat
quan minh » quang minh, quan binh, xuan minh
minh hien » minh hieu, minh kieu
hien soat » thien hoat, kiem soat, bien soan
ki nang » ky nang

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 ((quang van) OR (quang uan)) hieu luat ) or ( ki nang quan minh hien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung ((quang van) OR (quang uan)) hieu luat ) OR ( ki nang quan minh hien soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung ((quang van) OR (quang uan)) hieu luat ) or ( ki nang quan minh hien soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh dung ((quang van) OR (quang uan)) hieu luat ) or ( ki nang quan minh hien soat ))*.