Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
xuc ban » duc ban, cuc ban, quoc ban
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
v nang » va nang, van nang, voi nang
x hoi » xa hoi, o hoi, x ho
vi su » va su, ki su, oi su
ve su » va su

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 ((v nang) or (vu nang)) x hoi. hieu ve cam xuc ban hanh ((vi su) OR (ve su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((v nang) OR (vu nang)) x hoi. hieu ve cam xuc ban hanh ((vi su) OR (ve su)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((v nang) or (vu nang)) x hoi. hieu ve cam xuc ban hanh ((vi su) OR (ve su)) triet*".