Perhaps you should try some spelling variations:
chat huu » pham huu
su sach » so sach, vu sach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
huu va » cuu va, tuu va
cua te » cua tu
cua cu » cua chu, cua cau, cua su

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 lang) OR (ky tang)) xa hoi. hieu va chat huu va danh vi ((cua te) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky tang)) xa hoi. hieu va chat huu va danh vi ((cua te) OR (cua cu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky tang)) xa hoi. hieu va chat huu va danh vi ((cua te) or (cua cu))*".