Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
phuong cong » phuong dong, phong cong, phung cong
hanh trang » thanh trung, canh tranh, hanh trinh
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
hanh tang » anh tang, hanh mang, hanh tung
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai
trai cau » tra cau, trai chan, toan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu xanh) OR (tieu danh)) - ((hanh tang) or (hanh trang)) luan phuong cong tac trai cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (tieu danh)) - ((hanh tang) OR (hanh trang)) luan phuong cong tac trai cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) OR (tieu danh)) - ((hanh tang) or (hanh trang)) luan phuong cong tac trai cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) OR (tieu danh)) - ((hanh tang) or (hanh trang)) luan phuong cong tac trai cau*.