Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
cac dac » cac dan, cac dai, cac bac
van vat » van chat, nhan vat
vat cua » mat cua, bat cua, dat cua
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
dac va » duc va, day va, dat va
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) or (ky nang)) x hoi. hieu va cac dac va van vat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) x hoi. hieu va cac dac va van vat cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ky nang)) x hoi. hieu va cac dac va van vat cua tre*.