Perhaps you should try some spelling variations:
cua triet » su triet, va triet
xa trong » xa truong, ca trong, va trong
cua viet » ca viet, hoa viet, cua vat
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » lang xa, nang ma, mang xa
qua cam » qua cham, qua cac, qua ca
cam tuc » cam xuc, cam tu, nam thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky ((nang xa) or (nang x)) hoi. hieu qua cam tuc xa trong doi ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky ((nang xa) OR (nang x)) hoi. hieu qua cam tuc xa trong doi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky ((nang xa) or (nang x)) hoi. hieu qua cam tuc xa trong doi ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: so sanh ky ((nang xa) or (nang x)) hoi. hieu qua cam tuc xa trong doi ((cua triet) OR (cua viet))*.