Perhaps you should try some spelling variations:
chieu manh » hieu manh, chu manh, chieu sach
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
tranh ve » trinh ve, thanh ve, tranh va
ve nhung » va nhung, tu nhung
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
toan cau » toan cao, toan ban, toan tap

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 manh) OR (chieu xanh)) - canh tranh ve nhung cong bai toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu manh) OR (chieu xanh)) - canh tranh ve nhung cong bai toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu manh) OR (chieu xanh)) - canh tranh ve nhung cong bai toan cau*.