Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
sang ma » tang ma, nang ma, sang tao
mang xa » lang xa, mang may, dang xay
hieu va » lieu va, hieu qua
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa
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: vu sach ky ((mang xa) or (sang ma)) hoi. hieu va cac ((xac va) or (tuc va)) hanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((mang xa) OR (sang ma)) hoi. hieu va cac ((xac va) OR (tuc va)) hanh vi cau treo.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((mang xa) or (sang ma)) hoi. hieu va cac ((xac va) or (tuc va)) hanh vi cau treo*.