Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu xanh » chieu sach, chieu sang, chieu tinh
phuong dan » phuong danh, phuong doan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
manh va » anh va, minh va, lanh va
hanh va » hang va, hanh vi
chuc » thuc, chu, chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (chuc nang)) - hoang ((manh va) OR (hanh va)) nhung phuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chuc nang)) - hoang ((manh va) OR (hanh va)) nhung phuong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chuc nang)) - hoang ((manh va) OR (hanh va)) nhung phuong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chuc nang)) - hoang ((manh va) OR (hanh va)) nhung phuong dan toan cao*.