Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
duc van » duc va, duc tan, duc manh
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
vai cua » dai cua, hai cua, lai cua
hoc can » hoc dan, hoc cao, hoc cac
te sac » te sach, te cac, te san
cua te » cua tu
sac ky » cac ky, sai ky
ve cac » vien cac
ma hoi » mai hoi, xa hoi, ma hoa

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