Perhaps you should try some spelling variations:
dinh tri » chinh tri
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
ve chat » va chat, van chat
vu cham » va cham, vu kham, tu cham
va dinh » van dinh, va kinh, va tinh
tri luu » thi luu, tri lieu
luu tre » luu tru, cuu tre, luy tre
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky dang xa hoi. hieu ((ve chat) or (vu cham)) hoc va dinh tri luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky dang xa hoi. hieu ((ve chat) OR (vu cham)) hoc va dinh tri luu tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky dang xa hoi. hieu ((ve chat) or (vu cham)) hoc va dinh tri luu tre*.