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