Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
va triet » va thiet, va trien, ve triet
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
dinh cu » dinh cuu, dinh chuc, dinh chau
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho
cu va » cuu va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) y nang x hoi. hieu ve cam ((xuc van) OR (vuc van)) dinh cu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y nang x hoi. hieu ve cam ((xuc van) OR (vuc van)) dinh cu va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu sach)) y nang x hoi. hieu ve cam ((xuc van) OR (vuc van)) dinh cu va triet*".