Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong dinh, phuong hanh
dung phuong » dung thuong, bang phuong, dung chung
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh va » trinh van, trinh vat, trinh ve
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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

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