Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
cau luc » cau truc, cau phuc
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
sac ky » cac ky
ve cau » ke cau, va cau, ve cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) OR (sai ky)) nang x hoi. hieu ve cau luc va hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sai ky)) nang x hoi. hieu ve cau luc va hanh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) OR (sai ky)) nang x hoi. hieu ve cau luc va hanh vi ((cua tre) or (cuu tre))*".