Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
ve triet » va trien, su triet
cay phoi » cap phoi, tay hoi, cay cho
may thoi » gay thoi, may thi, tay thoi
bien cam » bien ca, bien cac, bien tam
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xuc va » duc va, tuc va, luc va
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang ((((may thoi) or (xa hoi))) or (cay phoi)). thieu bien cam xuc va hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ((((may thoi) OR (xa hoi))) OR (cay phoi)). thieu bien cam xuc va hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ((((may thoi) or (xa hoi))) or (cay phoi)). thieu bien cam xuc va hanh vi ve triet*.