Perhaps you should try some spelling variations:
thieu bien » tieu bieu, hien bien, hieu hien
thieu nien » thien nhien
cua triet » cua viet, su triet, va 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
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua

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) or (thieu nien)) cac ((xuc va) OR (duc va)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((thieu bien) OR (thieu nien)) cac ((xuc va) OR (duc va)) hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. ((thieu bien) or (thieu nien)) cac ((xuc va) OR (duc va)) hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ((thieu bien) or (thieu nien)) cac ((xuc va) OR (duc va)) hanh vi cua triet*.