Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
luu tre » luu tru, cuu tre
su sach » so sach, vu sach
hieu he » hieu ve, hiem he, hieu le
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
luy tre » luyen tre
he nam » ha nam, nghe nam

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