Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
hieu vi » hieu voi, hieu va, hieu ve
cua tre » cua te, cuu tre, cua triet
pham » phan

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) or (hoc sach)) v ((nang ma) OR (tang ma)) hoi. hieu vi pham duc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sach)) v ((nang ma) OR (tang ma)) hoi. hieu vi pham duc va thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (hoc sach)) v ((nang ma) OR (tang ma)) hoi. hieu vi pham duc va thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sach)) v ((nang ma) OR (tang ma)) hoi. hieu vi pham duc va thanh dai cua tre*.