Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
than cua » nhan cua, thai cua, ban cua
xay phoi » cay phoi, tay hoi, gap phoi
cap phoi » cap cho
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
ky danh » ky anh, ky dang
ve cam » ve cham, ve cac, va cam

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 ky danh ((xay phoi) OR (cap phoi)). hieu ve cam duc ban thanh ((tri cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky danh ((xay phoi) OR (cap phoi)). hieu ve cam duc ban thanh ((tri cua) OR (than cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky danh ((xay phoi) OR (cap phoi)). hieu ve cam duc ban thanh ((tri cua) or (than cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky danh ((xay phoi) OR (cap phoi)). hieu ve cam duc ban thanh ((tri cua) or (than cua)) tre*.