Perhaps you should try some spelling variations:
hanh nhan » thanh nhan, danh nhan, anh nhan
van hanh » van thanh, ban hanh, van anh
nhan cua » nhat cua, nhan luc, nhan su
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
su dai » sau dai, su tai, su hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su dai) OR (si dai)) ky nang xa hoi. hieu qua ((cam duc) or (cao duc)) van hanh nhan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su dai) OR (si dai)) ky nang xa hoi. hieu qua ((cam duc) OR (cao duc)) van hanh nhan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su dai) OR (si dai)) ky nang xa hoi. hieu qua ((cam duc) or (cao duc)) van hanh nhan cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su dai) OR (si dai)) ky nang xa hoi. hieu qua ((cam duc) or (cao duc)) van hanh nhan cua tre*.