Perhaps you should try some spelling variations:
luong thiet » luong thien, luong thit, tuong thiet
luong tiet » luong viet, luong tien, luong thien
trinh xay » trinh ky
dung lan » dung luan, dung land, dung lam
van chat » cao chat
quan den » quan doan, quan he, quan doi
lan van » luan van, lang van, tan van
te quan » ve quan, tac quan, tap quan

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