Perhaps you should try some spelling variations:
luong thiet » luong thien, luong thit, luong tiet
quang yen » quan den
ky nhung » my nhung, ty nhung, kim nhung
dang van » hoang van, hang va
tan van » tran van, tang van, luan van
nhung » nhuong, nchung, ndung
hung » huong, chung, dung

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 nhung ((tan van) or (dang van)) chat luong thiet ke ((quang yen) or (hung yen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh ky nhung ((tan van) OR (dang van)) chat luong thiet ke ((quang yen) OR (hung yen)).
• Adding a wildcard symbol may retrieve word variants: cong trinh ky nhung ((tan van) or (dang van)) chat luong thiet ke ((quang yen) or (hung yen))*.