Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
dien tinh » diep tinh, bien tinh, dien hinh
cua trong » cua truong, cua trung, qua trong
doi dien » duoc dien, dong dien, co dien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi dien tinh - ((hanh trinh) or (canh tranh)) cua trong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi dien tinh - ((hanh trinh) OR (canh tranh)) cua trong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: doi dien tinh - ((hanh trinh) or (canh tranh)) cua trong cong dan than cao*.