Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xay hoi » xa hoi, cay phoi, gay thoi
tay hoi » tay ho, tao hoi, tay thai
cao luc » bao luc, cao duc, cao suc
luc ban » duc ban, cuc ban, luc bat
tai cua » thai cua, tai cuc, tri cua
va cao » va cac, va co, va dao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang ((xay hoi) OR (tay hoi)). lieu va cao luc ban hanh tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang ((xay hoi) OR (tay hoi)). lieu va cao luc ban hanh tai cua te*".