Perhaps you should try some spelling variations:
trinh xay » trinh ky
dung land » dung luan, dung lam, dung san
thiet che » thiet ke, thien he, nhiet cho
thuat che » thuat cheo, thuat chan, thuat co
dung lan » dung luan, dung lam, dung san
van chat » cao chat
quan den » quan doan, quan he, quan doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: cong trinh xay ((dung lan) OR (dung land)) van chat luong ((thiet che) or (thuat che)) quan den~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh xay ((dung lan) OR (dung land)) van chat luong ((thiet che) OR (thuat che)) quan den.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong trinh xay ((dung lan) OR (dung land)) van chat luong ((thiet che) or (thuat che)) quan den".
• Adding a wildcard symbol may retrieve word variants: cong trinh xay ((dung lan) OR (dung land)) van chat luong ((thiet che) or (thuat che)) quan den*.