Perhaps you should try some spelling variations:
sach ngan » sach ngon, sach nha, sach han
lang hoa » lang ha, nang hoa, hoang hoa
van hanh » van thanh, ban hanh, van anh
hang hoa » hang khoa, thanh hoa, hang va
tu sach » thu sach, su sach, te sach
luc van » luoc van, luu van, duc van
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ngan ((lang hoa) OR (hang hoa)) hoi. ((hieu ve) OR (hieu qua)) cau luc van hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ngan ((lang hoa) OR (hang hoa)) hoi. ((hieu ve) or (hieu qua)) cau luc van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ngan ((lang hoa) OR (hang hoa)) hoi. ((hieu ve) or (hieu qua)) cau luc van hanh vi cua tre*.