Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
so sach » so sanh, bo sach, co sach
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
dung ha » dung va, dung he, dung khoa
dang ha » dong ha, lang ha, tang ha
de cua » le cua, te cua, dieu cua
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: so sach ky ((dang ha) OR (dung ha)) hoi. lieu va cham ((xuc ban) or (duc ban)) thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((dang ha) OR (dung ha)) hoi. lieu va cham ((xuc ban) OR (duc ban)) thanh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((dang ha) OR (dung ha)) hoi. lieu va cham ((xuc ban) or (duc ban)) thanh de cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((dang ha) OR (dung ha)) hoi. lieu va cham ((xuc ban) or (duc ban)) thanh de cua te*.