Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang mai » dang hai, dang mau, dang bai
nam duoc » nam thuoc, da duoc, dat duoc
dao lai » dao lam, dao bai, dao hai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, dua tren
ky dang » ky nang, ky danh
te cac » tu cac, ve cac, te cao
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky dang mai hoi. hieu ve ((nam duoc) or (cam xuc)) va dao lai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky dang mai hoi. hieu ve ((nam duoc) OR (cam xuc)) va dao lai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te cac ky dang mai hoi. hieu ve ((nam duoc) or (cam xuc)) va dao lai ((cua tre) or (cua triet))*.