Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
van hanh » van thanh, ban hanh, van anh
hanh ke » hanh kem, thanh ke, hanh ky
xuc van » duc van, luc van, vuc van
te sach » toc sach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
ke cau » ket cau
va cam » va cham, va cao, va cai

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) or (su sach)) ky nang xa hoi. hieu ((va cam) OR (va cac)) xuc van hanh ke cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang xa hoi. hieu ((va cam) OR (va cac)) xuc van hanh ke cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (su sach)) ky nang xa hoi. hieu ((va cam) OR (va cac)) xuc van hanh ke cau treo*".