Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
bien cam » bien ca, bien cac, bien tam
su triet » su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
su viet » so viet
xuc va » duc va, tuc va, luc va

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 nang xa hoi. thieu bien cam xuc va hanh vi ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. thieu bien cam xuc va hanh vi ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. thieu bien cam xuc va hanh vi ((su triet) or (su viet))*.