Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
hieu van » thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
cac duc » cac du, cao duc, cac dac
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

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