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
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
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 ((tung cua) OR (dung cua)) nhung cong trinh nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so kieu tinh - thanh ((tung cua) OR (dung cua)) nhung cong trinh nhan tai".
• Adding a wildcard symbol may retrieve word variants: so kieu tinh - thanh ((tung cua) OR (dung cua)) nhung cong trinh nhan tai*.