Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ((xa hoi) or (mai hoi)). hieu ve nam thuc van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ((xa hoi) OR (mai hoi)). hieu ve nam thuc van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang ((xa hoi) or (mai hoi)). hieu ve nam thuc van hanh di cua te*.