Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
trinh vi » trinh va, trinh viet, trinh van
trinh ve » trinh he, trinh va, trinh viet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tinh vi » tinh voi, tinh va, dinh vi
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc 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 ky nang xa hoi. nhieu viec cam xuc va ((tinh vi) or (((trinh vi) OR (trinh ve)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. nhieu viec cam xuc va ((tinh vi) OR (((trinh vi) OR (trinh ve)))) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. nhieu viec cam xuc va ((tinh vi) or (((trinh vi) OR (trinh ve)))) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. nhieu viec cam xuc va ((tinh vi) or (((trinh vi) OR (trinh ve)))) cua tre*.