Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
luan han » luan hoan, luan phan, luan van
han cong » phan cong, hang cong, hanh cong
cong anh » cong danh, dong anh, hong anh
anh van » anh va, thanh van, doanh van

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 (theo tieu)) xanh - canh tranh luan han cong anh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((ho chieu) OR (doi chieu))) OR (theo tieu)) xanh - canh tranh luan han cong anh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((ho chieu) OR (doi chieu))) or (theo tieu)) xanh - canh tranh luan han cong anh van ban".
• Adding a wildcard symbol may retrieve word variants: ((((ho chieu) OR (doi chieu))) or (theo tieu)) xanh - canh tranh luan han cong anh van ban*.