Perhaps you should try some spelling variations:
chat huu » pham huu
vu sach » vu bach, vu khach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
su sach » so sach
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: ((vu sach) OR (su sach)) ky nang x hoi. hieu va chat huu va danh vi ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky nang x hoi. hieu va chat huu va danh vi ((cua te) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ky nang x hoi. hieu va chat huu va danh vi ((cua te) or (cua su))*".