Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dang xay » dang van, van xay
cac quoc » cac nuoc, cac cuoc, cao quoc
quoc ban » quoc bao, quoc lan, quoc quan
thanh le » thinh le, thanh ve, thanh de
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
le cua » ly cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach tu)) dang xay hoi. hieu ve cac quoc ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) dang xay hoi. hieu ve cac quoc ban thanh le cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) dang xay hoi. hieu ve cac quoc ban thanh le cua vat*.