Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban banh » ban hanh, ban anh, ban danh
banh vi » hanh vi, ban vi, benh vi
cau cua » cau qua, ca cua, cu cua
cam cua » ca cua, nam cua, lam cua
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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) or (te sach)) ky lang xa hoi. hieu ve ((cam cua) or (cau cua)) ban banh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky lang xa hoi. hieu ve ((cam cua) OR (cau cua)) ban banh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky lang xa hoi. hieu ve ((cam cua) or (cau cua)) ban banh vi cua tre*.