Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
ban hang » ngan hang
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach tu, sach thu
cho tre » cho thue, khoe tre
tu sach » thu sach, su sach, te sach
ve cac » va cac, vien cac
xang x » nang x
x hoi » xa hoi, o hoi, x ho

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 xang x hoi. hieu ve cac xuc ((ban hanh) OR (ban hang)) lam ((cho tre) or (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang x hoi. hieu ve cac xuc ((ban hanh) OR (ban hang)) lam ((cho tre) OR (chay tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang x hoi. hieu ve cac xuc ((ban hanh) OR (ban hang)) lam ((cho tre) or (chay tren))*".