Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
hang tai » hang va, dung tai
sach thu » sach thue, sach thieu, sach tham
hanh lai » hanh lam, hanh tai, thanh lap
ve pham » vi pham, v pham, ve phan
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet

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 ty) or (sach thu)) lang xa hoi. hieu ve pham duc manh ((hanh lai) or (hang tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) lang xa hoi. hieu ve pham duc manh ((hanh lai) OR (hang tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) lang xa hoi. hieu ve pham duc manh ((hanh lai) or (hang tai)) cua tre*.