Perhaps you should try some spelling variations:
chu tren » cu tren, cau tren, chu trang
dan khai » dang khai, van khai, dang khoi
dan hai » doan hai, dang hai, van hai
su sach » vu sach
so sach » so sanh, bo sach, co sach
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
v sang » va sang, ve sang, _ sang
va cau » van cau, va cac, va dau
cau tu » dau tu, cau truc

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 sach) OR (so sach)) v sang ma hoi. hieu va cau tu va ((dan hai) OR (dan khai)) chu tren~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) v sang ma hoi. hieu va cau tu va ((dan hai) or (dan khai)) chu tren*.