Perhaps you should try some spelling variations:
ve triet » va trien, su triet
bien cac » dien cac, bien ca, hien cac
vien cac » vien bach, vien dai, vien da
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc 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) or (su sach)) ky nang xa hoi. thieu ((bien cac) OR (vien cac)) xuc va hanh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. thieu ((bien cac) OR (vien cac)) xuc va hanh va ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang xa hoi. thieu ((bien cac) OR (vien cac)) xuc va hanh va ve triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. thieu ((bien cac) OR (vien cac)) xuc va hanh va ve triet*.