Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
vu sach » vu bach, su sach, vu khach
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((lang xa) or (lang van)) hoi. hieu van nam thuc va hanh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((lang xa) OR (lang van)) hoi. hieu van nam thuc va hanh ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((lang xa) or (lang van)) hoi. hieu van nam thuc va hanh ((vi cua) OR (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((lang xa) or (lang van)) hoi. hieu van nam thuc va hanh ((vi cua) OR (vai cua)) triet*.