Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
nhan dai » nhan dan, phan dai, nhan dat
nhan tai » hang tai, van tai, toan tai
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky tang xa hoi. hieu ve cham duc tan ((nhan dai) or (nhan tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang xa hoi. hieu ve cham duc tan ((nhan dai) OR (nhan tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky tang xa hoi. hieu ve cham duc tan ((nhan dai) or (nhan tai)) cua tre*.