Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
ve cac » vien cac

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 ((ve cac) or (va cac)) ly va hanh vai ((cuu tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cac) OR (va cac)) ly va hanh vai ((cuu tre) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cac) or (va cac)) ly va hanh vai ((cuu tre) or (su tien))*.