Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cau treo » cau theo, cau tren, cau triet
sach ty » sach y, sach tu, sach thu
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
vi cau » va cau, ve cau, di cau
du va » dau va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sach ty)) dang xay hoi. hieu ve cac du va hanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sach ty)) dang xay hoi. hieu ve cac du va hanh vi cau treo*.