Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
cuu ban » cuu van, cua ban, cuu san
danh di » danh du, xanh di, danh dien
dinh di » dinh du, dinh vi, dinh da
cam cuu » cham cuu, cap cuu
hieu ve » hieu va, hieu van
van hoi » van hoc, van hoe, van loi
ky tang » ky nang, ky dang, kho tang
ve cam » ve cham, ve cac, va cam
ban ky » van ky, dan ky
tu ban » thu ban, te ban

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

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