Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua thong » cua thuong, cua khong, cua tong
doc hieu » toc thieu, hoc thieu, hoc hien
cong van » cong vang, cong san, song van
luan ban » luan van, luan san, luat ban
luan han » luan hoan, luan phan, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((hanh trang) or (thanh tran)) cua thong cong van ((luan ban) OR (luan han))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh trang) OR (thanh tran)) cua thong cong van ((luan ban) OR (luan han))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh trang) or (thanh tran)) cua thong cong van ((luan ban) OR (luan han))*".