Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
chung anh » phuong anh, khuong anh, nhung manh
cua dung » cua dang, cua dong, qua dung
hung anh » hung manh, hong anh, phuong anh
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 ((hieu manh) or (chieu sach)) - canh tranh cua dung ((chung anh) OR (hung anh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - canh tranh cua dung ((chung anh) OR (hung anh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sach)) - canh tranh cua dung ((chung anh) OR (hung anh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - canh tranh cua dung ((chung anh) OR (hung anh)) toan cau*.