Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
toc sac » toc sach, toc san, hoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac lop » cac hop, cac loai
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
sac ky » cac ky, sai ky
cac co » cac cong
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang xa hoi. hieu ve ((cac lop) or (cac co)) va danh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. hieu ve ((cac lop) OR (cac co)) va danh vi cau treo.
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu ve ((cac lop) or (cac co)) va danh vi cau treo*.