Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
hang hoi » hang hoa, hang hai, hang doi
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
hoi cua » hoi chuc
bo sach » co sach, hoc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sac) OR (bo sach)) ky nang ma hoi. ((hieu ve) or (hieu van)) nam thuoc ban hang hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sac) OR (bo sach)) ky nang ma hoi. ((hieu ve) OR (hieu van)) nam thuoc ban hang hoi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sac) OR (bo sach)) ky nang ma hoi. ((hieu ve) or (hieu van)) nam thuoc ban hang hoi cua triet*".