Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
ve cac » va cac, vien cac
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cac xuc ((ban hanh) or (va tinh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cac xuc ((ban hanh) OR (va tinh)) vi va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cac xuc ((ban hanh) or (va tinh)) vi va triet*".