Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
van nhan » van phan, van thanh, van khanh
van hanh » van thanh, ban hanh, van anh
vai cua » dai cua, hai cua, lai cua
va hanh » va thanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
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 ((van nhan) or (danh nhan)) luc ((va hanh) OR (van hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((van nhan) OR (danh nhan)) luc ((va hanh) OR (van hanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((van nhan) or (danh nhan)) luc ((va hanh) OR (van hanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((van nhan) or (danh nhan)) luc ((va hanh) OR (van hanh)) vai cua tre*.