Perhaps you should try some spelling variations:
thuat anh » thuat lanh, thuat canh, thuat nganh
thanh bai » thanh hai, thanh tai, thanh oai
van thanh » ban thanh, van tuan
hieu van » thien van, lieu va, hieu ve
bai cua » ban cua, dai cua, bai ca
duc van » duc va, duc tan, duc manh
bao duc » dao duc, bao luc, cao duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat anh _ ((nang ma) or (nang cao)) hoi. ((hieu va) or (hieu van)) bao duc van thanh bai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat anh _ ((nang ma) OR (nang cao)) hoi. ((hieu va) OR (hieu van)) bao duc van thanh bai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat anh _ ((nang ma) or (nang cao)) hoi. ((hieu va) or (hieu van)) bao duc van thanh bai cua tre*.