Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
quan hang » quan hoang, qua hang, quang hoang
quan lang » quan hoang, gian lang, quan luan
quan hanh » quan thanh, quang thanh, quang khanh
yen tinh » tuyen tinh
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
o yen » o den

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

• Performing a fuzzy search may retrieve terms with similar spellings: o yen tinh - hanh trinh ((((quan hang) or (quan lang))) or (quan hanh)) cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o yen tinh - hanh trinh ((((quan hang) OR (quan lang))) OR (quan hanh)) cong dan phan tu.
• Adding a wildcard symbol may retrieve word variants: o yen tinh - hanh trinh ((((quan hang) or (quan lang))) or (quan hanh)) cong dan phan tu*.