Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
hieu ve » hieu va, hieu van
xuc van » luc van, xuc ban, thuc van
duc van » duc va, duc tan, duc manh
luu van » cuu van, luan van, luu hanh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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 y nang x hoi. hieu ve cac ((((xuc van) OR (duc van))) or (luu van)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ve cac ((((xuc van) OR (duc van))) OR (luu van)) hanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ve cac ((((xuc van) OR (duc van))) or (luu van)) hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve cac ((((xuc van) OR (duc van))) or (luu van)) hanh tai cua tre*.