Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
dang xay » dang van, van xay
te sach » toc sach
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
cua tuc » cua duc, cua tu, cua thuoc
hieu ve » hieu va
lang xa » lang ha, lang van
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 xa) OR (dang xay)) hoi. ((hieu ve) OR (hieu van)) cam truc va hanh vi cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) or (dang xay)) hoi. ((hieu ve) OR (hieu van)) cam truc va hanh vi cua tuc~".
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (dang xay)) hoi. ((hieu ve) OR (hieu van)) cam truc va hanh vi cua tuc*.