Perhaps you should try some spelling variations:
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
hoc can » hoc dan, hoc cac, hoc phan
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
cua te » cua tu

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 va cac ((duc van) or (((hoc can) or (hoc cao)))) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky sang ma hoi. hieu va cac ((duc van) OR (((hoc can) OR (hoc cao)))) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sac ky sang ma hoi. hieu va cac ((duc van) or (((hoc can) or (hoc cao)))) hanh vi cua te*.