Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
hoc cac » hoc cao
lang ha » long ha
hieu ve » hieu van
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan de » dan den, dang de, van de

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac ky lang ha hoi. ((hieu ve) or (hieu va)) cam xuc va dan de ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ky lang ha hoi. ((hieu ve) OR (hieu va)) cam xuc va dan de ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: hoc cac ky lang ha hoi. ((hieu ve) or (hieu va)) cam xuc va dan de ((cua tre) or (su triet))*.