Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
loc ban » lo ban, hoc ban, coc ban
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
sach v » sach va, sach y, sach vay
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
sach 2 » sach y

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) OR (sach 2)) tang ma hoi. hieu ((va cam) or (va cao)) loc ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach 2)) tang ma hoi. hieu ((va cam) OR (va cao)) loc ban thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) OR (sach 2)) tang ma hoi. hieu ((va cam) or (va cao)) loc ban thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) OR (sach 2)) tang ma hoi. hieu ((va cam) or (va cao)) loc ban thanh dai cua tre*.