Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hien hanh » dieu hanh
tranh qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
qua dung » quang dung, su dung, qua song
vang van » dang van, tang van, lang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((chieu xanh) or (hien hanh))) or (chieu sang)) - canh tranh qua dung cong vang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (hien hanh))) OR (chieu sang)) - canh tranh qua dung cong vang van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (hien hanh))) or (chieu sang)) - canh tranh qua dung cong vang van ban*.