Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
choi xu » choi tu, chi xu, choi au
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
cho xu » chao xu, cho xa, cho xe
va cuu » va cau, va chu, va huu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x hoi. hieu ve ((cho xu) OR (choi xu)) ((va tinh) or (van dich)) va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ve ((cho xu) OR (choi xu)) ((va tinh) OR (van dich)) va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ve ((cho xu) OR (choi xu)) ((va tinh) or (van dich)) va cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ve ((cho xu) OR (choi xu)) ((va tinh) or (van dich)) va cuu tre*.