Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
dong danh » dong doanh, dong anh, dung danh
dong dan » duong dan, dong san, cong dan
toan cao » toan ban, toan tap
sinh va » sinh vat, tinh va, dinh van
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 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 va cong ((dong dan) OR (dong danh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: du lieu tinh - hanh sinh va cong ((dong dan) OR (dong danh)) toan cao*.