Perhaps you should try some spelling variations:
luong thiet » luong thit, luong tiet, tuong thiet
luong thien » luong tien, truong thien, luong thi
quang yen » hung yen
van chat » cao chat
quan den » quan doan, quan he, quan doi
ky dung » ly dung, ky dang, ky vung
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 ky dung luan van chat ((luong thiet) or (luong thien)) ke ((quang yen) or (quan den))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh ky dung luan van chat ((luong thiet) OR (luong thien)) ke ((quang yen) OR (quan den)).
• Adding a wildcard symbol may retrieve word variants: cong trinh ky dung luan van chat ((luong thiet) or (luong thien)) ke ((quang yen) or (quan den))*.