Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
hieu he » hieu ve, hiem he, hieu le
thuc va » thuc vat, thuc dan, thuc day
doi cua » hoi cua
vu sai » vu hai, vu dai, vu tai
vu san » va san, vu ban
he nam » ha nam, nghe nam
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sai) or (vu san)) ky nang x hoi. hieu he nam thuc va thanh ((dai cua) or (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sai) OR (vu san)) ky nang x hoi. hieu he nam thuc va thanh ((dai cua) OR (doi cua)) te.
• Adding a wildcard symbol may retrieve word variants: ((vu sai) or (vu san)) ky nang x hoi. hieu he nam thuc va thanh ((dai cua) or (doi cua)) te*.