Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
tai cuu » tai cuc, tai buu, tai cua
luu van » cuu van, luan van, luu hanh
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x hoi. hieu ve cac ((((xuc van) OR (xuc ban))) or (luu van)) hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ve cac ((((xuc van) OR (xuc ban))) OR (luu van)) hanh tai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu ve cac ((((xuc van) OR (xuc ban))) or (luu van)) hanh tai cuu tre*".