Perhaps you should try some spelling variations:
ban lanh » ban hanh, ban linh, ban anh
cay phoi » cap phoi, tay hoi, cay cho
su sach » so sach, vu sach
xuc ban » duc ban, cuc ban, quoc ban
hoi cua » hoi chuc
hai cua » thai cua, dai cua, lai cua
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, gay thoi
ve cam » ve cham, ve cac, va cam
ky van » ly van, ty van, ky va

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 ky van ((xay hoi) OR (cay phoi)). hieu ve cam xuc ban lanh ((hai cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky van ((xay hoi) OR (cay phoi)). hieu ve cam xuc ban lanh ((hai cua) OR (hoi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky van ((xay hoi) OR (cay phoi)). hieu ve cam xuc ban lanh ((hai cua) or (hoi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky van ((xay hoi) OR (cay phoi)). hieu ve cam xuc ban lanh ((hai cua) or (hoi cua)) tre*.