Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu hien » bieu hien, chieu chien, dieu khien
dieu hien » dieu khien, dieu kien, bieu hien
sach ky » sac ky, sach y, sach ty
bach tu » bach thu, cach tu, bac tu
su sach » so sach, vu sach
ca dan » ca dao
vi cua » vai cua, di cua
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: su sach ky nang x hoi. ((hieu hien) OR (dieu hien)) bach tu ((ca dan) or (cac dan)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. ((hieu hien) OR (dieu hien)) bach tu ((ca dan) OR (cac dan)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. ((hieu hien) OR (dieu hien)) bach tu ((ca dan) or (cac dan)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. ((hieu hien) OR (dieu hien)) bach tu ((ca dan) or (cac dan)) vi cua triet*.