Perhaps you should try some spelling variations:
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
vat thanh » dat thanh, gat thanh, tat thanh
nghe nam » nghe lam, nghiep nam, nghe nano
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
luu tre » luu tru, luy tre
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu hoach)) ky nang xa hoi. hieu nghe nam thuc vat thanh vi ((luu tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu hoach)) ky nang xa hoi. hieu nghe nam thuc vat thanh vi ((luu tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thu hoach)) ky nang xa hoi. hieu nghe nam thuc vat thanh vi ((luu tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky nang xa hoi. hieu nghe nam thuc vat thanh vi ((luu tre) OR (cuu tre))*.