Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, hanh tinh
vinh cua » sinh cua, tinh cua, dinh cua
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
hieu ve » hieu va
duc van » duc va, duc tan, duc manh
cac duc » cac du, cao duc, cac dac
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu
x hoi » o hoi, x ho, 5 hoi

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 nang ((x hoi) or (xa hoi)). ((hieu ve) or (hieu van)) cac duc van hanh vinh cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (xa hoi)). ((hieu ve) OR (hieu van)) cac duc van hanh vinh cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) or (xa hoi)). ((hieu ve) or (hieu van)) cac duc van hanh vinh cua te*.