Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
phan tai » pham tai, nhan tai, phan thi
van phan » van phong, van thanh, luan phan
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cua tre, cau tren
xuc van » duc van, luc van, vuc van
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ho » nang hoc, tang ho, nang cao
nang co » nang cao, nang doc, nang noi
ve cac » va cac, vien cac

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 ky ((nang co) or (nang ho)) hoi. hieu ve cac xuc van phan tai ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang co) OR (nang ho)) hoi. hieu ve cac xuc van phan tai ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang co) or (nang ho)) hoi. hieu ve cac xuc van phan tai ((cuu tre) OR (cau treo))*".