Perhaps you should try some spelling variations:
luong thiet » luong thien, luong thit, luong tiet
dung quang » dang quang, luong quang, dung luan
trinh xay » trinh ky
dung quan » dung luan, luong quan, dang quang
luan chat » luan chi, van chat, luan phan
quang yen » hung yen
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 quan) OR (dung quang)) luan chat luong thiet ke ((quang yen) or (quan den))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh xay ((dung quan) OR (dung quang)) luan chat luong thiet ke ((quang yen) OR (quan den)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong trinh xay ((dung quan) OR (dung quang)) luan chat luong thiet ke ((quang yen) or (quan den))".
• Adding a wildcard symbol may retrieve word variants: cong trinh xay ((dung quan) OR (dung quang)) luan chat luong thiet ke ((quang yen) or (quan den))*.