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 lao » ca lao, cac loai, cac giao
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
sac ky » cac ky, sai ky
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: toc sac ky nang xa hoi. hieu ve cac lao ((va danh) or (va hanh)) vi ((cau treo) or (cau thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. hieu ve cac lao ((va danh) OR (va hanh)) vi ((cau treo) OR (cau thi)).
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu ve cac lao ((va danh) or (va hanh)) vi ((cau treo) or (cau thi))*.