Perhaps you should try some spelling variations:
te sach » toc sach
hieu ve » hieu va, hieu van
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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) OR (ky nang)) xa hoi. hieu ve cac ((xuc van) or (duc van)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) xa hoi. hieu ve cac ((xuc van) or (duc van)) hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) xa hoi. hieu ve cac ((xuc van) or (duc van)) hanh di cua tre*.