Perhaps you should try some spelling variations:
luong thiet » luong thit, luong tiet, tuong thiet
luong thien » luong tien, truong thien, luong thi
trinh xay » trinh ky
van chat » cao chat
quan den » quan doan, quan he, quan doi
ke quan » ve quan, te quan, he quan
luan » lan

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 luan van chat ((luong thiet) OR (luong thien)) ke quan den~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong trinh xay dung luan van chat ((luong thiet) OR (luong thien)) ke quan den".
• Adding a wildcard symbol may retrieve word variants: cong trinh xay dung luan van chat ((luong thiet) OR (luong thien)) ke quan den*.