Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
nang may » mang may, nang ma, bang may
va nham » va cham, va tham, va nha
hieu va » lieu va, hieu qua
may hoi » may thoi, tay hoi, mai hoi
tu sanh » tu hanh, tu manh, tu anh
va cua » va chua, via cua, ca cua
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu sanh)) ky nang may hoi. hieu va nham thuc ((ban hanh) OR (ban hang)) va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu sanh)) ky nang may hoi. hieu va nham thuc ((ban hanh) OR (ban hang)) va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu sanh)) ky nang may hoi. hieu va nham thuc ((ban hanh) OR (ban hang)) va cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu sanh)) ky nang may hoi. hieu va nham thuc ((ban hanh) OR (ban hang)) va cua triet*.