Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
ky dang » ky danh
ky sang » ky tang, duy sang
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((((ky sang) or (ky dang))) or (ky nang)) mai hoi. hieu ve cac xuc va hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((((ky sang) OR (ky dang))) OR (ky nang)) mai hoi. hieu ve cac xuc va hanh va cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach ((((ky sang) or (ky dang))) or (ky nang)) mai hoi. hieu ve cac xuc va hanh va cau tren*.