Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh nhan » trinh han, trinh phan, trinh nha
kieu tinh » lieu tinh, trieu tinh, diep tinh
trung cua » truong cua, trung tuan, trung cap
nhan tai » hang tai, van tai, toan tai
so kieu » so dieu, so lieu, ho kieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so kieu tinh - thanh ((trung cua) or (dung luan)) nhung cong trinh nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so kieu tinh - thanh ((trung cua) OR (dung luan)) nhung cong trinh nhan tai*.