Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
vai va » mai va, dai va, hai va
ha lam » nha lam, hay lam, ha nam
ha am » hoa am, ha nam, va am

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 lang xa hoi. hieu ((ha am) OR (ha lam)) thuc ((ban hanh) or (dang thanh)) vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((ha am) OR (ha lam)) thuc ((ban hanh) OR (dang thanh)) vai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang xa hoi. hieu ((ha am) OR (ha lam)) thuc ((ban hanh) or (dang thanh)) vai va triet*".