Perhaps you should try some spelling variations:
dung thang » hung thang, cung thang, dung thuong
thieu hach » thien hach, chieu sach, hieu cach
manh dung » manh hung, manh tung, anh dung
dung luat » dung luan, dung quat, dung cua
luat cong » thuat cong, luat chung, cua cong
dung dat » dung va, dung tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu hach - manh dung luat cong ((dung thang) or (dung dat)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - manh dung luat cong ((dung thang) OR (dung dat)) phan tu.
• Adding a wildcard symbol may retrieve word variants: toc thieu hach - manh dung luat cong ((dung thang) or (dung dat)) phan tu*.