Perhaps you should try some spelling variations:
thi hanh » thi thanh
ban hanh » ban hang
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
hanh di » hanh vi, hanh de, hang di
xuc ban » duc ban, cuc ban, quoc ban
cau xuc » cam xuc, cau luc, cau truc
thi van » thi lan, thi nang
sach ky » sac ky, sach y, sach ty
mang xa » lang xa, mang may, mang cua
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de 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 ky ((mang xa) or (dang xay)) hoi. ((thi van) OR (thi hanh)) cau xuc ban hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((mang xa) OR (dang xay)) hoi. ((thi van) OR (thi hanh)) cau xuc ban hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((mang xa) or (dang xay)) hoi. ((thi van) OR (thi hanh)) cau xuc ban hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((mang xa) or (dang xay)) hoi. ((thi van) OR (thi hanh)) cau xuc ban hanh di cua tre*.