Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
cam thuc » am thuc, nam thuc, cam thu
thi hang » thi hanh, thi nang, thi hong
thuc ban » thuoc ban, thuc dan, thu ban
cu tren » tu tren, dua tren
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thu hang
ve cam » ve cham, ve cac, va cam

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 ((ty hang) OR (thi hang)) xa hoi. hieu ve cam thuc ban thanh lai ((cu tren) OR (cau treo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty hang) OR (thi hang)) xa hoi. hieu ve cam thuc ban thanh lai ((cu tren) or (cau treo))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hang) OR (thi hang)) xa hoi. hieu ve cam thuc ban thanh lai ((cu tren) or (cau treo))*.