Perhaps you should try some spelling variations:
ban thanh » ban hang
ban hanh » ban hang
hieu ve » hieu va, hieu van
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
de cuu » 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) or (sac ky)) lang xa hoi. hieu ve cam xuc ((ban thanh) OR (ban hanh)) de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) lang xa hoi. hieu ve cam xuc ((ban thanh) OR (ban hanh)) de cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) lang xa hoi. hieu ve cam xuc ((ban thanh) OR (ban hanh)) de cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) lang xa hoi. hieu ve cam xuc ((ban thanh) OR (ban hanh)) de cuu tre*.