Perhaps you should try some spelling variations:
dinh moi » dinh so, dinh tri, dinh thi
dinh doi » tinh doi, dinh toi, dinh doc
cua tre » cua te, cuu tre, cua triet
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
vu sac » vu sach, vu san, va sac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky sang ((ma hoi) OR (dai hoi)). hieu ve cam duc van ((dinh doi) OR (dinh moi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky sang ((ma hoi) or (dai hoi)). hieu ve cam duc van ((dinh doi) OR (dinh moi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky sang ((ma hoi) or (dai hoi)). hieu ve cam duc van ((dinh doi) OR (dinh moi)) cua tre*.