Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
ve triet » va trien, su triet
bien cac » vien cac, dien cac, bien ca
sach ky » sac ky, sach y, sach ty
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cac luc » cau luc, coc luc, cac nuoc
tu sach » thu sach, su sach, te sach
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
luc va » duc va, tuc va, loc va
va ve » va de, va le, va vi

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