Perhaps you should try some spelling variations:
xa thanh » va thanh, ha thanh, ban thanh
ta thanh » tai thanh, va thanh, ha thanh
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cac tuc » cac toc, cac tu, cac tac
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky nang ma hoi. lieu va cac tuc ((((xa thanh) or (gia thanh))) or (ta thanh)) doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang ma hoi. lieu va cac tuc ((((xa thanh) OR (gia thanh))) OR (ta thanh)) doi cuu tre.
• Adding a wildcard symbol may retrieve word variants: bo sach ky nang ma hoi. lieu va cac tuc ((((xa thanh) or (gia thanh))) or (ta thanh)) doi cuu tre*.