Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
xuc ban » duc ban, cuc ban, quoc ban
tang ky » dang ky, trong ky, tang khu
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
dan ky » van ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((tang ky) or (dan ky)) lang xa hoi. hieu qua cam xuc ban ((hanh di) OR (hang di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((tang ky) OR (dan ky)) lang xa hoi. hieu qua cam xuc ban ((hanh di) OR (hang di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((tang ky) or (dan ky)) lang xa hoi. hieu qua cam xuc ban ((hanh di) OR (hang di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((tang ky) or (dan ky)) lang xa hoi. hieu qua cam xuc ban ((hanh di) OR (hang di)) cua triet*.