Perhaps you should try some spelling variations:
quang phuong » bang phuong, dung phuong, hoang phuong
luan phuong » lan phuong, doan phuong, luat thuong
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, toc thieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van 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 thiet) or (hoc hien)) tach - hanh trinh ((luan phuong) OR (quang phuong)) cong dan than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) tach - hanh trinh ((luan phuong) OR (quang phuong)) cong dan than man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (hoc hien)) tach - hanh trinh ((luan phuong) OR (quang phuong)) cong dan than man".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc hien)) tach - hanh trinh ((luan phuong) OR (quang phuong)) cong dan than man*.