Perhaps you should try some spelling variations:
sang kyo » sang tao, dang ky, sang cho
dang van » hoang van, hang va
cam cuu » cham cuu, cap cuu
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
cuu ban » cuu van, cua ban, cuu san
hieu ve » hieu va, hieu van
sang ky » dang ky, tang ky, bang ky
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sang ky) or (sang kyo)) dang van hoi. hieu ve cam cuu ban ((danh vi) OR (dinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sang ky) OR (sang kyo)) dang van hoi. hieu ve cam cuu ban ((danh vi) OR (dinh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sang ky) or (sang kyo)) dang van hoi. hieu ve cam cuu ban ((danh vi) OR (dinh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sang ky) or (sang kyo)) dang van hoi. hieu ve cam cuu ban ((danh vi) OR (dinh vi)) cua tre*.