Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien cac » thien cac, vien cac, hieu cac
dinh vai » dinh van, dinh vi, dinh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, cua triet
cac bo » bac bo, cac co
bo va » bao va, do va, so va

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. bieu hien cac bo va ((dinh vai) OR (dinh va)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. bieu hien cac bo va ((dinh vai) OR (dinh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. bieu hien cac bo va ((dinh vai) OR (dinh va)) cua tre*.