Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan phung » luan phuong, luan chung, luan phong
bien tinh » bi tinh, yen tinh, diep tinh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than tap » toan tap, phan tap, than cap
ho bien » pho bien, hoa bien, so bien
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho bien tinh - hanh trinh luan phung ((cong dan) or (cong san)) ((than tap) or (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho bien tinh - hanh trinh luan phung ((cong dan) OR (cong san)) ((than tap) OR (han tap)).
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - hanh trinh luan phung ((cong dan) or (cong san)) ((than tap) or (han tap))*.