Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
te sach » toc sach
hanh di » hanh de, hang di, danh di
xuc van » duc van, luc van, xuc ban
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tu nang » tu nong, tu nano, tu lang
va cam » va cham, va cac, va cao
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 ((tu nang) OR (tru nang)) x hoi. hieu va cam xuc van ((hanh di) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (tru nang)) x hoi. hieu va cam xuc van ((hanh di) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nang) OR (tru nang)) x hoi. hieu va cam xuc van ((hanh di) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) OR (tru nang)) x hoi. hieu va cam xuc van ((hanh di) or (hanh vi)) cua tre*.