Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
doanh van » doan van, doanh va, doanh ban
lan manh » lanh manh, lan anh, van manh
manh qua » manh quan, manh cua, danh qua
qua dung » quang dung, su dung, qua song
anh van » anh va, thanh van, khanh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - lan manh qua dung trong ((anh van) OR (doanh van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - lan manh qua dung trong ((anh van) OR (doanh van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - lan manh qua dung trong ((anh van) OR (doanh van)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - lan manh qua dung trong ((anh van) OR (doanh van)) ban*.