Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
dung thanh » duong thanh, dong thanh, dang thanh
mot chieu » doi chieu, ho chieu
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
dung toan » dung doanh, dung thang, dung tai
doc hieu » toc thieu, hoc thieu, hoc hien

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

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