Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
vinh cuu » dinh cuu, sinh cua, dinh cu
vat danh » va danh, van danh, luat danh
lam thuc » lam thuoc, am thuc, nam thuc
van lam » van nam
sach ly » sach y, sach lo, sach hay
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
vi cuu » vi luu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) OR (sach ty)) lang xa hoi. hieu van lam thuc vat danh ((vi cuu) or (vinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach ty)) lang xa hoi. hieu van lam thuc vat danh ((vi cuu) OR (vinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) OR (sach ty)) lang xa hoi. hieu van lam thuc vat danh ((vi cuu) or (vinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) OR (sach ty)) lang xa hoi. hieu van lam thuc vat danh ((vi cuu) or (vinh cuu)) tre*.