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
dinh va » dinh van, dinh ve, tinh va
y nang » ky nang, ly nang, v nang
lao va » tao va, cao va, bao va
cua te » cua tu
co va » co ma, 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: tu sach y nang xa hoi. dieu hien cac ((lao va) or (co va)) dinh va ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. dieu hien cac ((lao va) OR (co va)) dinh va ((cua triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. dieu hien cac ((lao va) or (co va)) dinh va ((cua triet) or (cua te))*.