Perhaps you should try some spelling variations:
nhan thuc » nhan luc, dan thuc, toan thuc
thuc dang » thuoc dang, thuc dan, thuc dung
cua triet » cua viet, su triet, va triet
qua nhan » cua nhan, qua nhat, qua phan
trinh vi » trinh va, trinh ve, trinh viet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
tinh vi » tinh voi, tinh va, dinh vi

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 qua nhan thuc dang ((tinh vi) OR (trinh vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu qua nhan thuc dang ((tinh vi) OR (trinh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu qua nhan thuc dang ((tinh vi) OR (trinh vi)) cua triet*.