Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chieu sang, hieu cach
phuong dan » phuong danh, phuong doan, huong dan
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
dan toan » van toan, dan than, manh toan
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: hoc ((chieu xanh) or (((chiet tach) OR (chieu sach)))) - canh tranh van nhung phuong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (((chiet tach) OR (chieu sach)))) - canh tranh van nhung phuong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (((chiet tach) OR (chieu sach)))) - canh tranh van nhung phuong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (((chiet tach) OR (chieu sach)))) - canh tranh van nhung phuong dan toan ban*.