Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
duoc tuc » duoc tu, duoc muc, duoc duoc
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » lieu va, hieu qua
va duoc » vat duoc, va cuoc, va doc
xa tinh » va tinh, ha tinh, ca tinh
tinh va » tich va, trinh van, trinh vat
cua tre » cua te, cuu tre, dua tren
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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

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