Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh lai » hanh lam, thanh lap, thanh loi
sach ty » sach y, sach thu, xach tay
duc van » duc va, duc tan, duc manh
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
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 tu)) nang xa hoi. hieu ve pham duc van ((hanh lai) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang xa hoi. hieu ve pham duc van ((hanh lai) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) nang xa hoi. hieu ve pham duc van ((hanh lai) or (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach tu)) nang xa hoi. hieu ve pham duc van ((hanh lai) or (hanh tai)) cua tre*.