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

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