Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
doi chieu » doi chi, mot chieu, thi chieu
ho chieu » theo chieu, hoc thieu, mot chieu
doc hieu » toc thieu, hoc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

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