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