Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong trinh » chuong trinh, cong trinh, huong tran
chieu xanh » chieu sach, chieu sang, chieu tinh
nhieu tang » chieu sang, hieu lang, nhiet nang
trinh toan » tinh toan, thanh toan, trinh han
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
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 xanh) or (nhieu tang)) - ((hanh manh) OR (lanh manh)) cua nhung phuong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (nhieu tang)) - ((hanh manh) OR (lanh manh)) cua nhung phuong trinh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (nhieu tang)) - ((hanh manh) OR (lanh manh)) cua nhung phuong trinh toan cau*".