Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lan benh » san benh, can benh, doan benh
quoc lan » quoc ban, nuoc luan, quoc quan
lam quoc » lam duoc, nam quoc, lam thuoc
te sach » toc sach
van lam » van nam
lang xa » lang ha, dang xay, lang van
dang xa » dang xay, dang ha, dang va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((dang xa) OR (lang xa)) hoi. hieu van lam quoc lan benh ((vi cua) OR (di cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((dang xa) OR (lang xa)) hoi. hieu van lam quoc lan benh ((vi cua) or (di cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y ((dang xa) OR (lang xa)) hoi. hieu van lam quoc lan benh ((vi cua) or (di cua)) tre*.