Perhaps you should try some spelling variations:
luong thit » luong thiet, luong thi, huong thit
trinh xay » trinh ky
quan doan » quan hoang, chuan doan, chan doan
dung lam » dung luan, dung tai, dung dat
van chat » cao chat
quan den » quan he, quan doi
lam van » lam san, nam van, dam van
thit ke » thiet ke, thie ke, thien ke

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 lam van chat luong thit ke ((quan den) or (quan doan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong trinh xay dung lam van chat luong thit ke ((quan den) OR (quan doan)).
• Adding a wildcard symbol may retrieve word variants: cong trinh xay dung lam van chat luong thit ke ((quan den) or (quan doan))*.