Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hoi » thanh hoai, thanh hoa, thanh hai
cau tren » cu tren, dau tren, ca tren
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
nang lai » nang tai, mang lai, nang cai
cuu tre » cua tre, cau treo
tu sach » thu sach, su sach, te sach
cay dua » chay dua, cay lua, ca dua
cam dua » ca dua, chay dua, cach dua
hieu ve » hieu va, hieu van
lai hoi » dai hoi, lai hoa, lai roi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tru nang lai hoi. hieu ve ((cam dua) or (cay dua)) ban thanh hoi ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tru nang lai hoi. hieu ve ((cam dua) OR (cay dua)) ban thanh hoi ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tru nang lai hoi. hieu ve ((cam dua) or (cay dua)) ban thanh hoi ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach tru nang lai hoi. hieu ve ((cam dua) or (cay dua)) ban thanh hoi ((cuu tre) OR (cau tren))*.