Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
may hoi » may thoi, tay hoi, mai hoi
hieu va » lieu va, hieu qua
sac ky » sai ky
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: tu ((sac ky) or (cac ky)) mang may hoi. hieu va nam thuc ban hanh vai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) mang may hoi. hieu va nam thuc ban hanh vai ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) mang may hoi. hieu va nam thuc ban hanh vai ((cua triet) or (cua viet))*.