Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh lai » thanh hai, thanh lap, thanh loi
thu sach » tu sach, thuat sach, thuoc sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam dua » ca dua, chay dua, cach dua
cay dua » chay dua, cay lua, ca dua
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang

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 o lang xa hoi. hieu va ((cam dua) OR (cay dua)) ban thanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach o lang xa hoi. hieu va ((cam dua) OR (cay dua)) ban thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach o lang xa hoi. hieu va ((cam dua) OR (cay dua)) ban thanh lai cua tre*.