Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
vat hanh » vat thanh, van hanh, va hanh
sach ty » sach y, sach tu, xach tay
mang xa » lang xa, mang may, dang xay
thi van » thi lan, thi hanh, thi nang
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 ty) or (sach thu)) mang xa hoi. ((thien van) or (thi van)) nam cua vat hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) mang xa hoi. ((thien van) OR (thi van)) nam cua vat hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) mang xa hoi. ((thien van) or (thi van)) nam cua vat hanh vi cuu tre*.