Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dang van » hoang van, hang va
nam thuc » nam thuoc, am thuc, nam thu
gia cua » gian cua, giau cua, gia cuc
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
van hoe » van hoa, van hoc, van hieu
sai ky » sac ky
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sai ky)) dang van hoe. hieu van nam thuc va hanh ((va cua) or (gia cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sai ky)) dang van hoe. hieu van nam thuc va hanh ((va cua) OR (gia cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sai ky)) dang van hoe. hieu van nam thuc va hanh ((va cua) or (gia cua)) tre*.