Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
nang phap » nang phat, nang phan, ban phap
cua triet » cua viet, su triet, va triet
nang cai » nang cao, nang tai, nang cap
than cua » nhan cua, thai cua, ban cua
bach ky » bac ky
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky ((nang cai) or (nang phap)) hoi. hieu qua cam duc va hanh than cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky ((nang cai) OR (nang phap)) hoi. hieu qua cam duc va hanh than cua triet.
• Adding a wildcard symbol may retrieve word variants: vu bach ky ((nang cai) or (nang phap)) hoi. hieu qua cam duc va hanh than cua triet*.