Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
tai lang » tai cong, tai san, va lang
ve triet » va trien, su triet
danh lai » danh sai, gianh lai, dinh lam
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
thi lan » thi hanh, thi nang, thi lien
ve am » va am

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