Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, doanh van, dang van
te sach » toc sach
sach ky » sac ky, sach y, sach ty
danh va » doanh va, hanh va, anh va
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cao » va cac, va co, va dao
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu va cao duc va ((danh vai) OR (danh va)) ((cua triet) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va cao duc va ((danh vai) OR (danh va)) ((cua triet) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu va cao duc va ((danh vai) OR (danh va)) ((cua triet) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va cao duc va ((danh vai) OR (danh va)) ((cua triet) or (cua tu))*.