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
dan hang » ban hang, van hang, dat hang
thuc dan » thuc hanh, hoc dan, thuc vat
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
ve nam » he nam, va nam, te nam
ma hoi » mai hoi, xa hoi, ma hoa
le nam » ly nam, he nam, le na

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky dang ma hoi. hieu ((ve nam) or (le nam)) thuc dan hang hoi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky dang ma hoi. hieu ((ve nam) OR (le nam)) thuc dan hang hoi ((cua triet) OR (va triet))*.