Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
cac lop » cac hop, cac loai
lop van » lo van, long van, loai van
van anh » van thanh, tuan anh, van minh
ve cac » va cac, vien cac
anh va » hanh va
va cua » va chua, via cua, ca cua
cua te » cua tu

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) or (ky nang)) xa hoi. hieu ve cac lop van anh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky nang)) xa hoi. hieu ve cac lop van anh va cua te.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky lang) or (ky nang)) xa hoi. hieu ve cac lop van anh va cua te*.