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
phan bien » phan kien, phan tien, phan bon
cong san » cong tac
than tap » toan tap, han tap, phan tap
ho bien » pho bien, hoa bien, so bien

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) or (phan bien)) tinh - hanh trinh luan phung ((cong dong) or (cong san)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho bien) OR (phan bien)) tinh - hanh trinh luan phung ((cong dong) OR (cong san)) than tap.
• Adding a wildcard symbol may retrieve word variants: ((ho bien) or (phan bien)) tinh - hanh trinh luan phung ((cong dong) or (cong san)) than tap*.