Perhaps you should try some spelling variations:
cua quoc » cua nuoc, cua thuoc
nam truc » nam truoc, nam thuc, nam trung
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
te sach » toc sach
hieu ha » hieu hoa, hieu ca, hieu xa
lang ha » long ha
hieu va » lieu va, hieu qua
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi
vi cua » vai cua, di 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 lang ha hoi. ((hieu ha) OR (hieu va)) nam truc ((va hanh) OR (van hanh)) vi cua quoc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang ha hoi. ((hieu ha) OR (hieu va)) nam truc ((va hanh) or (van hanh)) vi cua quoc~".
• Adding a wildcard symbol may retrieve word variants: te sach y lang ha hoi. ((hieu ha) OR (hieu va)) nam truc ((va hanh) or (van hanh)) vi cua quoc*.