Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
thanh de » hanh de, thanh ve, thanh do
ve cham » va cham, ve chat, vu cham
cuc ban » cua ban, cac ban, cuu ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve cam » ve cac, va cam, ve cai
nang o » nang co, nang ho, nang ro
de cau » ke cau, le cau, ve cau
o hai » co hai, so hai, o lai

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 ty nang o hai. hieu ((ve cam) or (ve cham)) cuc ban thanh de cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang o hai. hieu ((ve cam) OR (ve cham)) cuc ban thanh de cau treo.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang o hai. hieu ((ve cam) or (ve cham)) cuc ban thanh de cau treo*.