Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
hanh tri » thanh tri, hanh tai, hanh trinh
tu sach » thu sach, su sach, te sach
nang ho » nang hoc, nang co, tang ho
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
duc van » duc va, duc tan, duc phan
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ho hai » hoc hai, pho hai, cho hai
ve cac » va 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 ho hai. hieu ve cac ((xuc ban) or (((duc van) or (duc manh)))) hanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ho hai. hieu ve cac ((xuc ban) OR (((duc van) OR (duc manh)))) hanh tri cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ho hai. hieu ve cac ((xuc ban) or (((duc van) or (duc manh)))) hanh tri cua tre*.