Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
hieu hien » bieu hien, dieu hien, chieu chien
va triet » va thiet, va trien, ve triet
cac thuc » cach thuc, cac thu, can thuc
thuc van » thuc vat, thuc dan, thuc va
hien cac » thien cac, vien cac, hieu cac
hang di » hang doi, hang vi, hang dien
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu hien cac thuc van ((hang di) or (hanh vi)) ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu hien cac thuc van ((hang di) OR (hanh vi)) ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. hieu hien cac thuc van ((hang di) or (hanh vi)) ((cua triet) OR (va triet))*".