Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thuc van » thuc vat, thuc dan, thuc va
nam thuc » nam thuoc, am thuc, nam thu
van anh » van thanh, tuan anh, van minh
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
anh le » manh le, oanh le, anh ve
cua tu » cua tuc, cua su, cua cu

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 ky ((mang xa) or (lang xa)) hoi. hieu van nam thuc van anh le ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((mang xa) OR (lang xa)) hoi. hieu van nam thuc van anh le ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((mang xa) or (lang xa)) hoi. hieu van nam thuc van anh le ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((mang xa) or (lang xa)) hoi. hieu van nam thuc van anh le ((cua te) OR (cua tu))*.