Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
dung cong » dung trong
van tuan » van quan, van ban, anh tuan
doi thi » doi thoi, do thi, doi khi
thi dan » thi doan, thi lan, thi dai
tuan cu » tuan tu, quan cua, tuan thu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi thi dan - hanh trinh quan ((((tvqg cong) OR (dang cong))) OR (dung cong)) van tuan cu~.
• Adding a wildcard symbol may retrieve word variants: doi thi dan - hanh trinh quan ((((tvqg cong) or (dang cong))) or (dung cong)) van tuan cu*.