Perhaps you should try some spelling variations:
trien hoat » tien hoa
thien hoat » thien thuat, tien hoa
tin thong » tin thuong, tin trong, tin tuong
tinh nang » trinh nang, tin nang, tich nang
nang quan » ban quan, nang suat
mien soat » kiem soat, bien soan, dien hoat
quan van » luan van, quan va, quan luan
quan vi » quan li, quan tri, quan doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin thong quan van ((thien hoat) OR (trien hoat)) ) or ( tinh nang quan vi mien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin thong quan van ((thien hoat) OR (trien hoat)) ) OR ( tinh nang quan vi mien soat ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin thong quan van ((thien hoat) OR (trien hoat)) ) or ( tinh nang quan vi mien soat ))*".