Perhaps you should try some spelling variations:
hien cua » khien cua, dien cua, hieu cua
van dinh » van minh, van dich, va dinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hien ca » hien cac, hien cau, hieu ca
lao van » dao van, cao van, lo van
dinh va » dinh van, dinh ve, tinh va
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ((hien ca) OR (hien cua)) lao van dinh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((hien ca) OR (hien cua)) lao van dinh va ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ((hien ca) OR (hien cua)) lao van dinh va ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((hien ca) OR (hien cua)) lao van dinh va ((cua tre) or (cua te))*.