Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh sinh » hanh tinh, hanh dinh, hanh chinh
hinh sinh » tinh sinh, hinh dinh, hinh kinh
dong danh » dong doanh, dong anh, dung danh
dong dan » duong dan, dong san, cong dan
toan cao » toan ban, toan tap
va cong » tai cong, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: du lieu tinh - ((hanh sinh) OR (hinh sinh)) va cong ((dong dan) or (dong danh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: du lieu tinh - ((hanh sinh) OR (hinh sinh)) va cong ((dong dan) OR (dong danh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "du lieu tinh - ((hanh sinh) OR (hinh sinh)) va cong ((dong dan) or (dong danh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: du lieu tinh - ((hanh sinh) OR (hinh sinh)) va cong ((dong dan) or (dong danh)) toan cao*.