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, danh va, doanh van
thue va » thuc va, thuyet va, thuc vat
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
thu va » thuc va, tu va, thu ha
va ca » va cac, va cao, va cai
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. lieu va ca ((thu va) OR (thue va)) danh vai ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. lieu va ca ((thu va) OR (thue va)) danh vai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang x hoi. lieu va ca ((thu va) OR (thue va)) danh vai ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. lieu va ca ((thu va) OR (thue va)) danh vai ((cua triet) or (va triet))*.