Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam chat » luan chat, cao chat, ly chat
tu sach » thu sach, su sach, te sach
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi nang
ban xu » ban tu, ban su, han xu
xu gia » xu giao, vu gia

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 ((v nang) OR (vu nang)) xa hoi. hieu van ban xu gia thanh ((nam cua) or (lam chat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((v nang) OR (vu nang)) xa hoi. hieu van ban xu gia thanh ((nam cua) OR (lam chat)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((v nang) OR (vu nang)) xa hoi. hieu van ban xu gia thanh ((nam cua) or (lam chat)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((v nang) OR (vu nang)) xa hoi. hieu van ban xu gia thanh ((nam cua) or (lam chat)) triet*.