Perhaps you should try some spelling variations:
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
luoc can » luc canh, hoc can, luoc dai
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky sang tao khoi. hieu ve cac ((duc van) or (luoc can)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky sang tao khoi. hieu ve cac ((duc van) OR (luoc can)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky sang tao khoi. hieu ve cac ((duc van) or (luoc can)) hanh di cua tre*.