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