Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
luan phuong » lan phuong, quang phuong, doan phuong
hoc thuyet » hoc chuyen
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
cong san » cong tac
san than » sang than, san thanh, ban than
than man » than ma, thanh san, tran manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thuyet) or (hoc hien)) tach - hanh trinh luan phuong cong san than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thuyet) OR (hoc hien)) tach - hanh trinh luan phuong cong san than man.
• Adding a wildcard symbol may retrieve word variants: ((hoc thuyet) or (hoc hien)) tach - hanh trinh luan phuong cong san than man*.