Perhaps you should try some spelling variations:
thong dien » thong dieu, thong tin, thong viet
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
chi xanh » chi danh, chi hanh, chieu xanh
toan cao » toan tap
toan ban » van ban
chi anh » chi danh, chi hanh, thi anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi xanh) OR (chi anh)) - hanh tranh cua thong thong dien ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi anh)) - hanh tranh cua thong thong dien ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) OR (chi anh)) - hanh tranh cua thong thong dien ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) OR (chi anh)) - hanh tranh cua thong thong dien ((toan cao) or (toan ban))*.