Perhaps you should try some spelling variations:
sang tao » hang tai
luoc can » luc canh, hoc can, luoc dai
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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 hoi. hieu ve cac ((duc van) or (luoc can)) hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky sang tao hoi. hieu ve cac ((duc van) OR (luoc can)) hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky sang tao hoi. hieu ve cac ((duc van) or (luoc can)) hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sac ky sang tao hoi. hieu ve cac ((duc van) or (luoc can)) hanh vi ((cua tre) OR (cuu tre))*.