Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dinh doi » dinh moi, tinh doi, dinh toi
van dinh » van minh, van dich, va dinh
cua tre » cua te, cuu tre, dua tren
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ma hoi » xa hoi, ma hoa, me hoi
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 (mai hoi)). hieu ve cam duc van dinh doi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky sang ((ma hoi) or (mai hoi)). hieu ve cam duc van dinh doi ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky sang ((ma hoi) or (mai hoi)). hieu ve cam duc van dinh doi ((cua tre) OR (cua triet))*.