Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ty hang » ty xang, thi hang, thu hang
ly hang » ly quang
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
co hoi » co loi
qua ca » qua cac, qua cua, qua cai
ca loc » cua loc, chua loc
loc va » hoc va, luc va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((ty hang) or (ly hang)) ((co hoi) or (co hoc)). hieu qua ca loc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((ty hang) OR (ly hang)) ((co hoi) OR (co hoc)). hieu qua ca loc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((ty hang) or (ly hang)) ((co hoi) or (co hoc)). hieu qua ca loc va hanh vi cuu tre*.