Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
dua tren » dung tren
tu sach » thu sach, su sach, te sach
sach xu » sach xa, cach xu, mach xu
xu lang » cu lang, tu lang, xu dang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa

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 xu lang xa hoi. hieu ve cham tuc va hanh vi ((dua tren) OR (cuu tre))~.
• Adding a wildcard symbol may retrieve word variants: tu sach xu lang xa hoi. hieu ve cham tuc va hanh vi ((dua tren) or (cuu tre))*.