Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
ban tinh » ban thanh, quan tinh, ban hanh
sach ky » sach ty, sach kem, sach hay
tinh vi » trinh vi, tinh voi, tinh va
cam cua » ca cua, nam cua, cau cua
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
vi cau » va cau, ve cau, di cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ky) OR (sach y))) OR (sac ky)) lang xa hoi. hieu va cam cua ban tinh vi cau tren~.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) or (sach y))) or (sac ky)) lang xa hoi. hieu va cam cua ban tinh vi cau tren*.