Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
ve triet » su triet
hoc sac » hoc sach, hoc cac, hoc mac
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
cua te » cua tu
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: hoc sac ky nang ma hoi. hieu ve cam xuc va hanh vi ((cua te) or (((ve triet) OR (va trien))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang ma hoi. hieu ve cam xuc va hanh vi ((cua te) OR (((ve triet) OR (va trien)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky nang ma hoi. hieu ve cam xuc va hanh vi ((cua te) or (((ve triet) OR (va trien))))".
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang ma hoi. hieu ve cam xuc va hanh vi ((cua te) or (((ve triet) OR (va trien))))*.