Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
dung dat » dung va, dung tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
thuc va » thuc vat, thuc dan, thuc day
dan dat » dong dat, dinh dat, dan hoat

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang xa hoi. lieu va cac thuc va ((dan dat) or (dung dat)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. lieu va cac thuc va ((dan dat) OR (dung dat)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. lieu va cac thuc va ((dan dat) or (dung dat)) cua triet*.