Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu dien » lieu dien, bieu dien, hieu hien
dien sach » dien anh
sach duoc » sach nuoc, sach dao, sach dung
hanh di » hanh vi, hanh de, danh di
cua tre » cua te, cuu tre, dua tren
hang di » hang doi, hang vi, hang dien
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
duoc va » nuoc va, duc va, duoc ma
nang xa » nang x, lang xa, nang ma

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 xa hoi. hieu dien sach duoc va ((hanh di) or (hang di)) ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu dien sach duoc va ((hanh di) OR (hang di)) ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu dien sach duoc va ((hanh di) or (hang di)) ((cua tre) or (cua triet))*.