Perhaps you should try some spelling variations:
dang bai » dung bai, dang ba, dang bac
xuat ban » luat ban, xuat san, thuat ban
dang hai » dang khai, hang hai, dung hai
tu sach » thu sach, su sach, te sach
va chat » van chat, va phat, cao chat
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
vi cua » vai cua, di 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: tu sach ky ((dang bai) or (dang hai)) hoi. hieu va chat ((xuat ban) or (duc ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((dang bai) OR (dang hai)) hoi. hieu va chat ((xuat ban) OR (duc ban)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((dang bai) or (dang hai)) hoi. hieu va chat ((xuat ban) or (duc ban)) hanh vi cua te*.