Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang hoi » hang hoa, hang hai, hang doi
ban hang » ngan hang
thuc ban » thuoc ban, thuc dan, thu ban
hoi cua » hoi chuc
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
ve nam » he nam, va nam, le nam

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 ((nang ma) OR (tang ma)) hoi. hieu ((ve nam) or (ha nam)) thuc ban hang hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang ma) OR (tang ma)) hoi. hieu ((ve nam) OR (ha nam)) thuc ban hang hoi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang ma) OR (tang ma)) hoi. hieu ((ve nam) or (ha nam)) thuc ban hang hoi cua triet*".