Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong hanh, phuong thanh
phuong dinh » phuong binh, phuong linh, phuong trinh
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
toan cao » toan ban, toan tap
ve pho » ve cho, ve ho, ve tho
ve phi » ve thi, he phi, le phi

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 - hanh trinh ((ve pho) OR (ve phi)) ((phuong danh) or (phuong dinh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh trinh ((ve pho) OR (ve phi)) ((phuong danh) OR (phuong dinh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh trinh ((ve pho) OR (ve phi)) ((phuong danh) or (phuong dinh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh trinh ((ve pho) OR (ve phi)) ((phuong danh) or (phuong dinh)) toan cao*.