Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
cau tren » cu tren, dau tren, ca tren
lang mai » lang dai, lang hai, lang man
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » va cham, vu cham, ve chim
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
hanh va » hang va, hanh vi
ve chat » va chat, van chat
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: thu sach ky lang mai hoi. hieu ((ve cham) or (ve chat)) xuc va ((hanh tai) or (hanh va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky lang mai hoi. hieu ((ve cham) OR (ve chat)) xuc va ((hanh tai) OR (hanh va)) cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach ky lang mai hoi. hieu ((ve cham) or (ve chat)) xuc va ((hanh tai) or (hanh va)) cau tren*.