Perhaps you should try some spelling variations:
danh trung » dang trung, dinh trung, manh trung
hanh trung » thanh trung, manh trung, hanh trong
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cong tinh » cong trinh, cong vinh, long tinh
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((((hanh trung) OR (danh trung))) or (hanh trang)) cua nhung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((((hanh trung) OR (danh trung))) OR (hanh trang)) cua nhung cong tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((((hanh trung) OR (danh trung))) or (hanh trang)) cua nhung cong tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((((hanh trung) OR (danh trung))) or (hanh trang)) cua nhung cong tinh toan ban*.