Perhaps you should try some spelling variations:
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cua dung » cua dang, cua dong, qua dung
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - ((canh tranh) or (hanh chinh)) cua dung cong vang toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((canh tranh) OR (hanh chinh)) cua dung cong vang toan tap*.