Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
ban hanh » ban hang
cham cuu » cap cuu, chat cua
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
dang xa » dang xay, lang xa, dang ha
cuu ban » cuu van, cua ban, cuu san
cua tre » cua te, cuu tre, cua triet
sac ky » sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sac ky) or (cac ky)) dang xa hoi. hieu van cham cuu ban hanh vi ((cua tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (cac ky)) dang xa hoi. hieu van cham cuu ban hanh vi ((cua tre) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (cac ky)) dang xa hoi. hieu van cham cuu ban hanh vi ((cua tre) or (cau triet))*.