Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
dung sang » dung san, dung dang, dung nang
toc sach » hoc sach, doc sach, thuoc sach
sang tay » sang tao, sang tai, sang tac
voi pham » toi pham, loai pham, v pham
va thanh » gia thanh, ban thanh, va tinh
tay hoi » tay ho, tao hoi, tay thai
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach dung sang tay hoi. hieu ((voi pham) or (vi pham)) duc va thanh phan ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach dung sang tay hoi. hieu ((voi pham) OR (vi pham)) duc va thanh phan ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: toc sach dung sang tay hoi. hieu ((voi pham) or (vi pham)) duc va thanh phan ((cua te) or (cua su))*.