Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
van hanh » van thanh, ban hanh, van ban
dinh cua » dinh cuu, sinh cua, dinh cu
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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. hieu viec cac nuoc ((((van hanh) or (van anh))) or (van minh)) dinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu viec cac nuoc ((((van hanh) OR (van anh))) OR (van minh)) dinh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu viec cac nuoc ((((van hanh) or (van anh))) or (van minh)) dinh cua tre*.