Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
vai cua » dai cua, hai cua, lai cua
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang
su sach » so sach, vu sach
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sac) OR (tu san))) or (su sach)) ky mang may hoi. hieu va tham thuc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sac) OR (tu san))) OR (su sach)) ky mang may hoi. hieu va tham thuc ban hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sac) OR (tu san))) or (su sach)) ky mang may hoi. hieu va tham thuc ban hanh vai cua triet*".