Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
van anh » van thanh, tuan anh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((mang may) or (nang ma)) hoi. hieu ve cac xuc ((van anh) OR (van minh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((mang may) OR (nang ma)) hoi. hieu ve cac xuc ((van anh) OR (van minh)) vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((mang may) or (nang ma)) hoi. hieu ve cac xuc ((van anh) OR (van minh)) vai cuu tre*".