Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, lieu va, hieu ve
lam thuc » lam thuoc, am thuc, nam thuc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
kinh vi » dinh vi, kinh ve, kinh i
kenh vi » benh vi, lenh vi
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: thu sach ky nang xa hoi. ((hieu van) or (thien van)) lam thuc va ((kinh vi) OR (kenh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. ((hieu van) OR (thien van)) lam thuc va ((kinh vi) OR (kenh vi)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. ((hieu van) or (thien van)) lam thuc va ((kinh vi) OR (kenh vi)) cuu tre*".