Perhaps you should try some spelling variations:
hanh vai » hanh va, hanh tai, hanh van
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
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: so sach y nang xa hoi. hieu ve ((cam tuc) or (am thuc)) va ((hanh vai) OR (hanh vi)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ve ((cam tuc) OR (am thuc)) va ((hanh vai) OR (hanh vi)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. hieu ve ((cam tuc) or (am thuc)) va ((hanh vai) OR (hanh vi)) cua viet".
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ve ((cam tuc) or (am thuc)) va ((hanh vai) OR (hanh vi)) cua viet*.