Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
danh sai » dung sai, danh bat, danh dau
danh vai » danh va, doanh van, dang van
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
te sach » toc sach
ve cac » va cac, vien cac
toc ta » toc tay, toc thai
y nang » ky nang, ly nang, v nang

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 xa hoi. hieu ve cac toc ta ((danh vai) OR (danh sai)) ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ve cac toc ta ((danh vai) OR (danh sai)) ((cua tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu ve cac toc ta ((danh vai) OR (danh sai)) ((cua tre) or (cau treo))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ve cac toc ta ((danh vai) OR (danh sai)) ((cua tre) or (cau treo))*.