Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
nang han » nang phan, nang hang, nang hanh
hieu va » lieu va, hieu qua
cau duc » cao duc, cau luc, chu duc
duc van » duc va, duc tan, duc manh
hanh ve » hanh va, hanh kem
han hoi » phan hoi, dan hoi, van hoi
va cau » van cau, va cac, va dau
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky nang han hoi. hieu va cau duc van ((hanh ve) or (hanh vi)) ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang han hoi. hieu va cau duc van ((hanh ve) OR (hanh vi)) ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te cac ky nang han hoi. hieu va cau duc van ((hanh ve) or (hanh vi)) ((cua triet) or (va triet))*.