Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
toan ban » van ban

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

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