Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
va dan » ca dan, va dao, va dau
dan di » danh di, dan da, dan de
di cuu » di cau, di cua, dinh cuu

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 ((x ho) or (xa hoi)). hieu ve nam thuc va dan di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ((x ho) OR (xa hoi)). hieu ve nam thuc va dan di cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang ((x ho) or (xa hoi)). hieu ve nam thuc va dan di cuu tre*.