Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dua tren » dung tren
danh xay » dang xay, anh xay, dan xay
manh xay » nganh xay, van xay, dang xay
su sach » so sach, vu sach
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
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: su sach ky ((danh xay) or (manh xay)) hoi. hieu ve cam xuc ban thanh san ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((danh xay) OR (manh xay)) hoi. hieu ve cam xuc ban thanh san ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach ky ((danh xay) or (manh xay)) hoi. hieu ve cam xuc ban thanh san ((dua tren) or (cuu tre))*.