Perhaps you should try some spelling variations:
thanh trung » thanh tung
lieu tinh » trieu tinh, diep tinh, bien tinh
doi lieu » duoc lieu, doi chieu, du lieu
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, cong dong
toan cao » toan ban, toan tap
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi lieu tinh - thanh trung va tong ((cong dan) OR (huong dan)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi lieu tinh - thanh trung va tong ((cong dan) OR (huong dan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - thanh trung va tong ((cong dan) OR (huong dan)) toan cao*.