Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cac luc » cau luc, coc luc, cac nuoc
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
tu dan » tuc dan, tu ban, cu dan
cua te » cua tu
my va » may va, ly va, me va
ky la » ky le, ky va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ((ky la) or (my va)) xa hoi. hieu ve cac luc va hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ((ky la) OR (my va)) xa hoi. hieu ve cac luc va hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu dan ((ky la) or (my va)) xa hoi. hieu ve cac luc va hanh vi ((cua tre) or (cua te))*.