Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
hieu van » hieu va, thien van, hieu ve
thuc va » thuc vat, thuc dan, thuc day
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. ((hieu van) OR (lieu va)) lam thuc va ((danh vi) or (danh di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. ((hieu van) OR (lieu va)) lam thuc va ((danh vi) OR (danh di)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. ((hieu van) OR (lieu va)) lam thuc va ((danh vi) or (danh di)) cua tre*".