Perhaps you should try some spelling variations:
sang mai » lang mai, hoang mai, giang mai
danh vai » danh sai, danh va, doanh van
sang tai » hang tai, sang tao, tang tai
su sach » so sach, vu sach
vai cuu » vai cua
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((((sang mai) or (sang ma))) or (sang tai)) hoi. hieu ve cac xuc va danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((((sang mai) OR (sang ma))) OR (sang tai)) hoi. hieu ve cac xuc va danh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((((sang mai) or (sang ma))) or (sang tai)) hoi. hieu ve cac xuc va danh vai cuu tre*.