Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
luan phuong » lan phuong, quang phuong, doan phuong
trinh luan » trinh luat, trinh quan, trinh han
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, toc thieu
cong dan » cong san, cong tan, huong dan
than man » than ma, tran manh, than phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc hien)) tach - hanh trinh luan phuong cong dan ((than man) OR (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) tach - hanh trinh luan phuong cong dan ((than man) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (hoc hien)) tach - hanh trinh luan phuong cong dan ((than man) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc hien)) tach - hanh trinh luan phuong cong dan ((than man) OR (thanh san))*.