Perhaps you should try some spelling variations:
van chat » cao chat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va chat » va phat, cao chat, hoa chat
va dinh » van dinh, va kinh, va tinh
dinh ve » dinh ket, dinh van
huu va » cuu va, tuu va
cua te » cua tu
cua su » qua su
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 ((va chat) OR (van chat)) huu va dinh ve ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ((va chat) OR (van chat)) huu va dinh ve ((cua te) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((va chat) OR (van chat)) huu va dinh ve ((cua te) or (cua su))*".