Perhaps you should try some spelling variations:
sang mai » sang ma, lang mai, hoang mai
sang tai » hang tai, sang tao, tang tai
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, ban hanh
vai cuu » vai cua
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, dia danh
cac xuc » cam xuc, cac nuoc, chat xuc
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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: su sac ky ((sang mai) OR (sang tai)) hoi. hieu ve cac xuc ((va hanh) OR (va danh)) vai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((sang mai) or (sang tai)) hoi. hieu ve cac xuc ((va hanh) OR (va danh)) vai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((sang mai) or (sang tai)) hoi. hieu ve cac xuc ((va hanh) OR (va danh)) vai cuu tre*.