Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
cua triet » cua viet, su triet, va triet
hien cac » thien cac, vien cac, hieu cac
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cac lao » ca lao, cac loai, cac giao
dinh va » dinh van, tinh va, sinh va
dinh ve » dinh ket, dinh van
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
lao va » tao va, cao va, bao va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. dieu hien cac lao va ((dinh va) or (dinh ve)) ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. dieu hien cac lao va ((dinh va) OR (dinh ve)) ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. dieu hien cac lao va ((dinh va) or (dinh ve)) ((cua tre) or (cua triet))*.