Perhaps you should try some spelling variations:
sach ky » sach y, sach ty, sach kem
tang xa » trang xa, tang ma, lang xa
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
hien » bien, vien, tien

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sac ky)) tang xa hoi. hieu ((va cam) or (hien dai)) tuc xa hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) tang xa hoi. hieu ((va cam) OR (hien dai)) tuc xa hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sac ky)) tang xa hoi. hieu ((va cam) or (hien dai)) tuc xa hanh vi cua tre*".