Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
lan benh » san benh, can benh, doan benh
quoc lan » quoc ban, nuoc luan, quoc quan
dang xay » dang van, van xay
lam quoc » lam duoc, nam quoc, lam thuoc
benh vi » benh va, benh ve, benh li
te sach » toc sach
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
vi cua » vai 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: te sach y ((lang xa) OR (dang xay)) hoi. ((hieu van) or (lieu va)) lam quoc lan benh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (dang xay)) hoi. ((hieu van) OR (lieu va)) lam quoc lan benh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) OR (dang xay)) hoi. ((hieu van) or (lieu va)) lam quoc lan benh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) OR (dang xay)) hoi. ((hieu van) or (lieu va)) lam quoc lan benh vi cua tre*.