Perhaps you should try some spelling variations:
cua triet » cua viet
danh vai » danh sai, danh va, doanh van
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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 ky nang x hoi. hieu va am thuc va danh vai ((((cua triet) OR (su triet))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu va am thuc va danh vai ((((cua triet) OR (su triet))) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang x hoi. hieu va am thuc va danh vai ((((cua triet) OR (su triet))) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu va am thuc va danh vai ((((cua triet) OR (su triet))) or (va triet))*.