Perhaps you should try some spelling variations:
van nang » van quang, van ban, van dung
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
anh de » hanh de, anh d, anh ve
de cuu » de cua
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((van nang) or (van dong)) o hai. hieu ve cac truc van anh de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((van nang) OR (van dong)) o hai. hieu ve cac truc van anh de cuu tre*.