Perhaps you should try some spelling variations:
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
danh vi » hanh vi, dinh vi, danh di
xuc ban » cuc ban, quoc ban, xuat ban
van lam » van nam
y xang » ty xang
xang x » nang x
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 y xang x hoi. hieu van lam ((xuc ban) or (duc ban)) danh vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y xang x hoi. hieu van lam ((xuc ban) OR (duc ban)) danh vi ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y xang x hoi. hieu van lam ((xuc ban) or (duc ban)) danh vi ((dua tren) or (cua te))*.