Perhaps you should try some spelling variations:
thien van » thi van
dang xay » dang van, van xay
ban hanh » ban hang
xua ban » xuat ban, cua ban, qua ban
nam xua » nam cua, nam mua, nam qua
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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) or (sach ty)) ((mang may) or (dang xay)) hoi. thien van nam xua ban hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) ((mang may) OR (dang xay)) hoi. thien van nam xua ban hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) ((mang may) or (dang xay)) hoi. thien van nam xua ban hanh vi cuu tre*.