Perhaps you should try some spelling variations:
xuong thiet » luong thiet, tuong thiet, thuong thiet
phan xuong » phan cong
trinh xay » trinh ky
dung quan » dung quang, dung luan, luong quan
luan phan » luan van, luan hoan
quang yen » quan den
hung » huong, nhung, chung

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 luan phan xuong thiet ke ((quang yen) or (hung yen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh xay dung quan luan phan xuong thiet ke ((quang yen) OR (hung yen)).
• Adding a wildcard symbol may retrieve word variants: cong trinh xay dung quan luan phan xuong thiet ke ((quang yen) or (hung yen))*.