Perhaps you should try some spelling variations:
phuong dinh » phuong binh, phuong linh, phuong trinh
phuong hanh » phuong thanh, phuong anh, phuong danh
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh cua » tinh cua, trinh quan, trinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
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 - hanh ((trinh cua) OR (trinh luat)) thi ((phuong dinh) or (phuong hanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh cua) OR (trinh luat)) thi ((phuong dinh) OR (phuong hanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh cua) OR (trinh luat)) thi ((phuong dinh) or (phuong hanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh cua) OR (trinh luat)) thi ((phuong dinh) or (phuong hanh)) toan cao*.