Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
dan than » dan chan, ban than, van than
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - canh tranh cua dung cong ((dan than) or (van chat)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh cua dung cong ((dan than) OR (van chat)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua dung cong ((dan than) or (van chat)) cau*.